Question

Express as a trinomial.
(x + 9) (3x + 9)

Answer 1

⇛(x + 9) (3x + 9)

⇛x(3x+9) + 9(3x+9)

⇛3x² + 9x + 18x + 81

⇛3x² + 27x + 81

Answer 2

3x^2+36x+81

Explanation:

(x+9)(3x+9)=3
`x^(2)` +9x+37x+81