Question

(4x +b) - 9x
( 7-2x) -2x​

Answer 1

$\huge\tt\underline{ANSWER :-}$

$= > \: \: - 9x\: ( 4x + b) \\ = > - 36 {x}^{2} + - 9xb$

Answer 2

Step-by-step explanation:

$1) \\ - 9x(4x + b) \\ = \: - 36 - 9bx \\ \\ 2) \\ - 2x(7 - 2x) ( - 2 x \times 7) + ( - 2x \times - 2x) \\ \\ = - 14 - 4x ^{2}$