Question

1. Evaluate each of the fo
(a) (3x + 7) (3x+7)​

Answer 1

Answer:

$9 {x}^{2} + 21x + 21x + 49 \\ = 9{x}^{2} + 42x + 49$

it will be the answer

Answer 2

Answer:

(3x+7)*(3x+7)

=(3x+7)²

=(3x)²+2*3x*7+(7)²

=9x²+42x+49