Question

Factor Completely: 5x2 - 40

Answer 1

5(x^2-8)

Answer 2

Thanks!

Answer 3

No problem :)

Answer 4

oh but you can go one step further \[5x^2 - 40\]\[=5(x^2-8)\]\[=5(x^2-(2\sqrt2)^2)\]\[=5(x+2\sqrt2)(x-2\sqrt 2)\]

Answer 5

Okay, thanks!