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The study of Algebra
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The study of Algebra
If you were to study for an important test on Algebra, which Algebra topics would you study or focus more on?
P.S.: State specific topics.
P.S.: State specific topics.
Ahmed- NH Admin
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Re: The study of Algebra
facotring .. solving for the unknown variable .. graphing ..functions ..
i have a precalc review quiz .. what do i study for? lol ..
i have a precalc review quiz .. what do i study for? lol ..
Doc- NH Member
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Re: The study of Algebra
everything, obviously
jj16802- NH Moderator
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Re: The study of Algebra
I forgot to mention that you have less than a week to study.
Ahmed- NH Admin
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Re: The study of Algebra
we will help you,... by chearing you on cus i stink at math =D
preid1220- NH Moderator
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Re: The study of Algebra
On help on functions anyone?
Ahmed- NH Admin
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Re: The study of Algebra
have you done functions?
Doc- NH Member
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Re: The study of Algebra
what kind of help? (help solving, expalaining, etc)
Hassan- NH Retired Moderator
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Re: The study of Algebra
Sayfullah wrote:have you done functions?
You see Sayf...I am sure, some people forget the things that they learned last year.
This whole year I took geometry...all of a sudden I am taking an algebra test...so you forget things...
I took it before however.
Give me an example of a function question Hassan.
Ahmed- NH Admin
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Re: The study of Algebra
An easy one .. f(x) = 5x-3
Solve if x = 4
Solve if x = 4
Doc- NH Member
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Re: The study of Algebra
Lol, those are functions??
Those are th easiest questions
x=17
COrrect?
Those are th easiest questions
x=17
COrrect?
Ahmed- NH Admin
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Re: The study of Algebra
lol that was an extremely easy and simple one ....try tis one:
if f(x) = x^2+2x+3 find
f(x + h) - f(x)
-------------
h
*Note* this is a fraction ...
if f(x) = x^2+2x+3 find
f(x + h) - f(x)
-------------
h
*Note* this is a fraction ...
Doc- NH Member
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Re: The study of Algebra
Wait...are these 2 questions?
Also what's the "h"?
Also what's the "h"?
Ahmed- NH Admin
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Re: The study of Algebra
I forgot to mention inequalities and absolute values ... might wanna try those too ... and rationalizing, complteting the square, exponents, radicals, simplifying ... a few more problems:
rationalize the denominator:
1
---
√x - 1
simplify:
(27x^3)^2/3
x+1 x^2-2x+1
----- * --------
x-x^2 x^2-1
*Note* the above problem is a fraction .. it's the same thing as x+1 / x-x^2 * x^2-2x+1 / x^2-1
solve for x
2x^2 + 1 = 4x
And forget that last problem I gave you .. that's actually more related to calculus than algebra ... here's a better problem related to functions:
find the domain of:
f (x) = 15 / x-3
or
15
----
x-3
rationalize the denominator:
1
---
√x - 1
simplify:
(27x^3)^2/3
x+1 x^2-2x+1
----- * --------
x-x^2 x^2-1
*Note* the above problem is a fraction .. it's the same thing as x+1 / x-x^2 * x^2-2x+1 / x^2-1
solve for x
2x^2 + 1 = 4x
And forget that last problem I gave you .. that's actually more related to calculus than algebra ... here's a better problem related to functions:
find the domain of:
f (x) = 15 / x-3
or
15
----
x-3
Doc- NH Member
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Re: The study of Algebra
1
---
√x - 1
√x - 1
-------
x- 2√x +1
Correct?
(27x^3)^2/3 ==I don't believe I took this...but refersh my memory please.
x+1 x^2-2x+1
----- * --------
x-x^2 x^2-1==This isn't clear...is that 1 fraction or 2?
I am stuck with the 4th one, is it correct so far: 2x^2-4+1=0
What do you mean find the "domain"?
---
√x - 1
√x - 1
-------
x- 2√x +1
Correct?
(27x^3)^2/3 ==I don't believe I took this...but refersh my memory please.
x+1 x^2-2x+1
----- * --------
x-x^2 x^2-1==This isn't clear...is that 1 fraction or 2?
I am stuck with the 4th one, is it correct so far: 2x^2-4+1=0
What do you mean find the "domain"?
Ahmed- NH Admin
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Re: The study of Algebra
first one is actually:
√x+1
--------
x-1
when you rationalize a problem like this you multiply both the numerator and denominator by the conjugate of the denominator ... the conjugate for the denominator for this problem is √x + 1 .. since the original denominator was √x - 1 .. the conjugate is basically the opposite of the original term ...
iut's 27x raised to the third power in paranthesis all raised to 2/3 .. if you haven't taken it just forget it ...
you don't know what the domain, range and stuff are?
√x+1
--------
x-1
when you rationalize a problem like this you multiply both the numerator and denominator by the conjugate of the denominator ... the conjugate for the denominator for this problem is √x + 1 .. since the original denominator was √x - 1 .. the conjugate is basically the opposite of the original term ...
(27x^3)^2/3 ==I don't believe I took this...but refersh my memory please.
iut's 27x raised to the third power in paranthesis all raised to 2/3 .. if you haven't taken it just forget it ...
this is just like the one you posted in the HW forum ... multiplying two fractions ...x+1 x^2-2x+1
----- * --------
x-x^2 x^2-1==This isn't clear...is that 1 fraction or 2?
yeah you're right so far ... except you forgot to put the x after the 4 .. it's 2x^2-4x+1=0 not 2x^2-4+1=0 ... try using the quadratic formula for that ...
I am stuck with the 4th one, is it correct so far: 2x^2-4+1=0
What do you mean find the "domain"?
you don't know what the domain, range and stuff are?
Doc- NH Member
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Re: The study of Algebra
I thought you had to use FOIL, as in (√x + 1)(√x + 1)...when multiplying such things?
Ok, is it:
(x-1)
------
x(1-x)
=========================
Yes, I just forgot to write the x, when posting it here.
How would you solve it...there are no factors that fit 2x^2-4x+1=0...
=========================
I do, but I don't understand what do you eman by solve for them?
Aren't they for graphing?
Ok, is it:
(x-1)
------
x(1-x)
=========================
Yes, I just forgot to write the x, when posting it here.
How would you solve it...there are no factors that fit 2x^2-4x+1=0...
=========================
I do, but I don't understand what do you eman by solve for them?
Aren't they for graphing?
Ahmed- NH Admin
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Re: The study of Algebra
argh just forget it man .. just study whatever you learned
Doc- NH Member
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Re: The study of Algebra
Could you give me real questions...I am studying right now from a Barron's book.
Ahmed- NH Admin
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Re: The study of Algebra
You know...my weakest skill in math is not beign able to focus...my mistakes are always the stupidest mistakes...such as not reading a word like "false" or "true" or "right angles" *sigh*
Ahmed- NH Admin
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Re: The study of Algebra
|3-6x|>1
state in interval notation
the long vertical lines are absolute value brackets
state in interval notation
the long vertical lines are absolute value brackets
Doc- NH Member
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Re: The study of Algebra
x>-4/6
Ahmed- NH Admin
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Re: The study of Algebra
nevernmind ...
Doc- NH Member
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Re: The study of Algebra
Is it right -___-?
Ahmed- NH Admin
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Re: The study of Algebra
ok this one
4x 6
--- * ----
x^2-9 x^2+x-12
4x 6
--- * ----
x^2-9 x^2+x-12
Doc- NH Member
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