9x^2+9x+2
The trinomial is in the form:
ax^2+bx+c
Where:
a=9
b= 9
c=2
First, multiply a by c:
9 x 2 = 18
then, find product that equal 18
2 x 9 = 18
1 x 18 = 18
6 x3 =18
Find the the one that added equal to b-
b= 9
6+3 = 9
Rewrite the trinomial with new numbers added in the middle term place:
9x = 6x+3x
9x^2+6x+3x+2
Isolate similar terms and factor by Great Common factor:
(9x^2+3x) +(6x+2)
3x (3x+1)+2(3x+1)
Factor out 3x+1
(3x+2) (3x+1)