Question

O resultado da expressão -5 . Raiz quadrada de 64 + (-9)² é:
A) -40
B) 40
C) -41
D) 41

ME AJUDE POR FAVOR!!

Answer 1

$\Large\displaystyle\begin{gathered} \tt - 5 \sqrt{64} + ( - 9) {}^{2} \end{gathered}$

$\Large\displaystyle\begin{gathered} \tt - 5 \cdot8 + 81 \end{gathered}$

$\Large\displaystyle\begin{gathered} \tt - 40 + 81 \end{gathered}$

$\Large\displaystyle\text{ \begin{gathered} \boxed{ \boxed{ \tt41}} \end{gathered} }$