Help on Algebra Homework!?

Question

How to do these problems:

9x² - 36z^4

x³y - 2xy² + x²y³

3x² - 6x - 2 = 4 + 5x - 7x²

3x²y + 15xy² + 21x³y^4

2x^4y³z + 6x³y²z³ - 4xy²z²

i really need help in factoring. can u show me how to do this step by step and tell me all the factoring methods. Please Help and if u have a website please share with me.

Answer 1

1)(3x+6z^2)(3x-6z^2)=0

2)xy(x^2-2y+xy^2)=0

3) 3x² - 6x - 2 = 4 + 5x - 7x²

10x^2-15x+4x-6=0

(5x^2+2)(2x^3)=0

4)3xy(x+5y+7x^2y^3)

5)2xy^2z(x^3y+3x^2z^2-2z)

Go to this site to refresh your skills on factoring.

http://www.purplemath.com/modules/simpfa...

Answer 2

I am only in 8th grade.I had studied only simple ways of doing algebra.I am verry sorrrrry.......