Question

Factor: x2 + 7x – 18
A. (x + 5)(x + 2)
B. (x + 9)(x + 2)
C. (x + 4)(x + 3)
D. (x + 9)(x – 2)

Answer 1

this one is easy, you don't even need to do math.

Answer 2

you see the third term is a negative? then the answer must have a positive and a negative number. and there's only one answer choice with a positive and negative.

Answer 3

D

Answer 4

Yes, but she needs to apply the concept for all Q's. It's not as easy as it seems all the time.