Question

b 4x+3x² + 5x;4x - 7x + 5+7-1​

Answer 1

Answer:

9x+3x²;3x+11

Step-by-step explanation:

$4x + 3 {x}^{2} + 5x \\ 9x + 3 {x}^{2}$

and

$4x - 7x + 5 + 7 - 1 \\ 3x + 12 - 1 \\ 3x + 11$