Question

A= x² + 12 ax² +10
B= 5x²+3ax-4ax²+3
determine:
a) A+B
b) A - B

Answer 1

Resposta:

$a + b = \\ x² + 12 ax² +10 + 5x²+3ax-4ax²+3 = \\ 6 {x}^{2} + 8 ax² + 3ax + 13 \\ a - b = \\ x² + 12 ax² +10 - 5x² - 3ax + 4ax² - 3 = \\ - 4 {x}^{2} + 16ax² - 3ax + 7$