Homework Help: Algebra

Posted by Rachelle on Monday, November 10, 2008 at 4:38pm.

Hi! I have a few questions about Factoring Quadratic Expressions.

My first one is 12x^2+x=6. How would you facor that?

My second is how would x^4-1 equal the answer 1(x^4-1)(x^2=1)(x^2-1)?

Finally, how would you factor something such as -3x(x+2)-8(x+2), when there is no common factor other than one?

Thank you so much for your assistance! :)

Algebra - Damon, Monday, November 10, 2008 at 4:51pm
12 x^2 + x - 6 = 0
I solved the quadratic and got 2/3 and -3/4 so then tried
(3x+2)(4x-3)=0
Algebra - Damon, Monday, November 10, 2008 at 4:57pm
x^4-1 is difference of two squares
(x^2-1)(x^2+1)
then
(x-1)(x+1)(x^2+1)
Algebra - Reiny, Monday, November 10, 2008 at 4:59pm
for 12x^2+x=6 write is as
12x^2+x-6 = 0
then (3x-2)(4x+3) = 0

x^4-1 factors to
(x^2 -1)(x^2 + 1)
=(x-1)(x+1)(x^2+1)

for -3x(x+2)-8(x+2) you should see that ((x+2) is a common factor, so

-3x(x+2)-8(x+2)
= (x+2)(-3x-8)
= -(x+2)(3x+8)
Algebra - Damon, Monday, November 10, 2008 at 4:59pm
-3x(x+2)-8(x+2)
sure there is a common factor -- (x+2)
(x+2)(-3x-8)
(x+2)(-1)(3x+8)

Answer this Question

Related Questions

algebra,math,help - Use Property 2 to simplify each of the following radical ...
math - Can someone please help me with these few problems here? Find the holes ...
algebra 1 - factoring quadratic expressions 8x^2+32x+14
FACTORING HELP ASAP - i dont know how this works.. but im helping my friend with...
calc - one more question!! what values of c deos the polynomial f(x) = x^4 + cx^...
Algebra - Find the measure of each line segment whose algabraic expressions is ...
algebra - Please can someone help me with these? factoring 2x^2+5x-3 and 3x^2-...
Algebra 2 - I need to know how to solve quadratic equations by factoring. Can ...
RE: Math - Need help on factoring. HOw exactly would I solve these(big test ...
algebra - Quadratic equations can be solved by graphing,using the quadratic ...

For Further Reading

First Name:
School Subject:
Answer: