`8x^2 + 18x + 9` Factor the trinomial. If the trinomial cannot be factored, say so.
We can solve this using the AC factoring method:
8x^2 + 18x + 9
Multiply a by c
8 x 9 = 72
Find factors of 72 that add up to b (18)
12 and 6 meet the requirement, plug these in as b
8x^2 + 12x + 6x + 9
(8x^2 + 12x) + (6x + 9)
Factor out the greatest common factors:
4x (2x + 3 ) + 3 (2x + 3)
Put the numbers outside in a parentheses together :
(4x + 3) (2x + 3)
is the factored form.