Question

please help! the area of a rectangular painting is given by the trinominal x^2 + 4x - 21. what are the possible dimensions of the painting? use factoring
a. (x+7) and (x+3)
b. (x-7) and (x+3)
c. (x-7) and (x-3)
d. (x+7) and (x-3)

Answer 1

PLEASE HELP

Answer 2

B ?

Answer 3

Factor that trinomial, the factors are the dimensions!

Answer 4

Would it be B?

Answer 5

@Isaiah.Feynman

Answer 6

The fastest way is to factor the trinomial once and the answer will pop and you will be sure of it.