Question

Which trinomial has a factor of (2x+3)
A.2x^2+6x+9
B.2x^2+12x+9
C.4x^2+6x+9
D.4x^2+12x+9

Answer 1

This may work try it.
Multiply A x C
Then find two numbers that can multiply into that but still give you b. For example in the first one multiply 2 x 9. then find two things that when multiplied equal 18, but add up to 6

Answer 2

Is it 2x^2+12x+9 @giantsniners

Answer 3

I need backup, I feel like my strategy does not work for this certain problem. @RadEn

Answer 4

@jigglypuff314

Answer 5

if u put \(2x+3=0\) u get \(x=-3/2\).

replace x=-3/2 in the polynomials, if it becomes zero, u have the answer

Answer 6

okay thank you

Answer 7

u r welcome

Answer 8

I didnt get zero for any of them @helder_edwin

Answer 9

4x^2+12x+9
= (2x+3)(2x+3)
or
(2x+3)^2

Answer 10

So will it be 4x^2+12x+9 then? @shamil98

Answer 11

yes.

Answer 12

u should have gotten a zero when replacing x=-3/2 in (D).

4(-3/2)^2+12(-3/2)+9=4(9/4)-12(3/2)+9=9-18+9=0

Answer 13

Okay thank you

Answer 14

u r welcome