Question

Calcule o valor da expressão:
$(\frac{1}{2}) {}^{ - 2} + ( \frac{1}{3}) {}^{ - 1}$
​

Answer 1

Resposta:

(1/2)^(-2) +(1/3)^(-1)

=2²  +3

=4+3

=7

Answer 2

$= ( \frac{1}{2} ) {}^{ - 2} + ( \frac{1}{3} ) {}^{ - 1} \\ \boxed{( \frac{1}{a} ) {}^{ - n} = a {}^{n} } \\ = 2 {}^{2} + 3 \\ = 4 + 3 \\ \boxed{ = 7}$

Att. NLE Top Shotta