Question

Select the two binomials that are factors of this trinomial.

x2 – x – 30
A.x – 6
B.x + 10
C.x + 5
D.x + 3

Answer 1

for
`x^2-x-30`

find what 2 numbers multiply to get -30 and add to get -1

-6 and 5

factors to (x-6)(x+5)

so answers are A and C

Answer 2

Answer: A & C

Explanation:

x² - x - 30

∧

1 -30 = -29

2 -15 = -13

3 -10 = -7

5 -6 = -1 This is equal to the b-value of -1 so THIS WORKS!

(x + 5) (x - 6)