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Hi, this is a bit of topic but I could not find any good algebra forums. Havn't done this since freshman yr so Im a bit rusty.

1) 6x - x^2 = x

*I set this to zero and factor and get -2, and 3. But it doesn't work when i plug it back in? where did I mess up?

2) 5 - 35/x^2 = 0

*No idea how to do it?

3) Factor : 2x^4 - 32

2(x+2)(x-2)(x+2)(x-2)

4) Factor : 5y^3 + 2y^2 - 10y - 4

(5y^3 + 2y^2)(-10y - 4)

y^2(5y + 2) -2(5y + 2)

(y^2 - 2)(5y + 2)

* I think i can factor it more i don't know how.

any help is appreciated

1) 6x - x^2 = x

*I set this to zero and factor and get -2, and 3. But it doesn't work when i plug it back in? where did I mess up?

2) 5 - 35/x^2 = 0

*No idea how to do it?

3) Factor : 2x^4 - 32

2(x+2)(x-2)(x+2)(x-2)

4) Factor : 5y^3 + 2y^2 - 10y - 4

(5y^3 + 2y^2)(-10y - 4)

y^2(5y + 2) -2(5y + 2)

(y^2 - 2)(5y + 2)

* I think i can factor it more i don't know how.

any help is appreciated

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