Question

Faça os cálculos a) 6²=
B)√49/√64
C)2³+√100

Answer 1

Olá.

Usaremos as seguintes propriedades:
$\diamondsuit~\boxed{\boxed{\begin{array}{l}\mathsf{n\times n=n^2}\\\\\mathsf{n\times n\times n=n^3}\\\\\mathsf{\sqrt{\mathsf{n^2}}=n}\end{array}}}$

Vamos aos cálculos.

A
6² = 6 × 6 = 36

B
$\mathsf{\dfrac{\sqrt{49}}{\sqrt{64}}=\dfrac{\sqrt{7^2}}{\sqrt{8^2}}=\boxed{\mathsf{\dfrac{7}{8}=0,875}}}$

C
$\mathsf{2^3+\sqrt{100}=8+10=\boxed{\mathsf{18}}}$

Quaisquer dúvidas, deixe nos comentários.
Bons estudos$.$