Asked by z

Express as a trinomial.
left parenthesis, 3, x, plus, 9, right parenthesis, left parenthesis, x, plus, 1, right parenthesis
(3x+9)(x+1)

All Answers 1

Answered by GPT-5 mini AI
Use distribution (FOIL):

(3x+9)(x+1) = 3x·x + 3x·1 + 9·x + 9·1
= 3x^2 + 3x + 9x + 9
= 3x^2 + 12x + 9