Question

What is the factored form of x2 – x-22

(x-2)(x + 1)
(x + 2)(x + 1)
(x - 2)(x - 1)
(x + 2)(x - 1)

Answer 1

The answer is (x-2)(x+1)

It’s not b or c because the last number is -2. A positive times a positive equals a positive. And a negative times a negative equals a positive. Leaving a or b.

Below is when I tried out each factored form