Question

a) 256 b) - 400 c) 400 d) - 256 e) n.d.a.

Answer 1

Resposta:

d) -256

Explicação passo-a-passo:

$20 {x}^{3} + 2 {x}^{2} {y}^{5}$

$20 {( - 4)}^{3} + 2 {( - 4)}^{2} \times {2}^{5}$

$20 \times ( - 64) + 2 \times 16 \times 32$

$- 1280 + 1024 = - 256$