Factor the expression. x2 – x – 42 (x – 7)(x – 6) (x – 7)(x + 6) (x + 7)(x – 6) (x + 7)(x + 6)

(x−7)(x+6)

Step-by-step explanation:

x2 – x – 42

Which two numbers add up to −1 and multiply to −42? Well it's -7 and 6, so the answer is (x−7)(x+6).

(x - 7)x + 6).

Step-by-step explanation:

x^2 – x – 42

6 * -7 = 42 and  6 - 7 = -1 so the factors are:

(x - 7)x + 6).

this is answer of 144 cubic meters