Question

Alguém me ajuda?

a) (2x²+3x-15)-(2x²-3x-16)

b) (4x3+4x²-22)+(3x³-2x²+15)

c) (2x2) . (2x-3)

d) 18x³+9x² - 3x÷3x

Answer 1

a
$6x + 1$
b
${3}x^{3} + 2x ^{2} + 5$
c
$8x - 12$
d
${6x}^{2} + 3x - 1$