Question

d. O valor da expressão (-7)2 + (+3).(-4) - (-5) é:
( ) 7
( ) 37
( ) 42​
( ) 47

Answer 1

→ Cálculo :

$\\{{\boxed{\begin{array}{lr}{{{(-7)^{2}+(+3)\times(-4)-(-5) }=}} \\ \\ {{49+(-12)-(-5)=}} \\\\{49-12+5=}\\\\{54-12=}\\\\{\boxed{\red{42}}} \\ \end{array}}}}$