Question

Factor the expression completely.
5x - 5x-10
Please explain this step by step

Answer 1

Explanation:

5x^2 - 5x - 10

factor out the 5

5 (x^2 - x -2 )

note how the 5 doesn't make any difference for our question.

now use FOIL , know it?

First, Outside, Inside, Last

(X ± ? ) * ( X ± ? )

we want that above form.

(X+1) * (X - ? )

hmm

(X+1) * (X -2)

that looks like it would work

now just put the 5 back on

5*{(X+1)*(X-2)}

there it is :)

Answer 2

\textcolor{#B14BA5}{5x}\textcolor{#B14BA5}{-5x}-10

5

−

5

−

1

0

-10

−

1

0