Question

Find the zeros of x^2+11x+18=0

Answer 1

Challenge: find two numbers multiplied together gives you 18, those same two added gives you 11.

Answer 2

I have answer choices, and two of them are 18.
so..
a) zeros:2,9
b) zeros: -2,-9

Answer 3

Try them (x+9)(x+2)
(x-9)(x-2) Which ever expands to your original equation.
First double check your numbers: does be add up to 18?

Answer 4

i think its the zeros:2,9 because it also adds up to be 11

Answer 5

Good guess. Proof would be the good, old FOIL.