Question

9- Efetue a operação

(4x3 - 8x² + x-5)-(7x3 + 10x² - 2x + 18).

Answer 1

(12 - 64x + 5x) - (21 + 10x - 2x + 18)

64x+5x-10x-2x= 21+18-12

57x = 27

$\frac{27 \\ }{57}$