Question

Qual é o valor da expressão numérica [3² + (√81 . 5 – 20) + 1³]?

a)35

b)40

c)30

d)52​

Answer 1

$3^2+\left(\sqrt{81}\cdot \:5-20\right)+1^3\\\\=3^2+5\sqrt{81}-20+1\\\\=3^2+45-20+1\\\\=3^2+26\\\\=9+26\\\\\mathrm{Somar:}\:9+26=35\\\\=35$

a)35

Answer 2

Resposta:

$3^2+\left(\sqrt{81}\cdot \:5-20\right)+1^3\\\\3^2+5\sqrt{81}-20+1\\\\3^2+45-20+1\\\\45-20+1=26\\\\3^2+26\\\\9+26\\\\35$

a)35<<<<<<