Question

Preciso do cálculo também.

Answer 1

Resposta:

$( \frac{2}{3}) {}^{- 2} - ( \frac{1}{2}) {}^{ - 1} + ( - \frac{1}{4}) {}^{- 2} \\ ( \frac{3}{2}) {}^{2} - ( \frac{1}{2}) {}^{ - 1} + ( \frac{1}{4}) {}^{2} \\ ( \frac{3}{2}) {}^{2} - 2 + ( - \frac{1}{4}) {}^{ - 2} \\ ( \frac{3}{2}) {}^{2} - 2 + 2( - 4) {}^{2} \\ \frac{9}{4} - 2 + ( - 4) {}^{2} \\ \frac{9}{4} - 4 + 16 \\ \frac{9}{4} + 14 \\ \frac{65}{4}$

Answer 2

$= ( \frac{ 2 }{ 3 } ) ^ { -2 } -( \frac{ 1 }{ 2 } ) ^ { -1 } +(- \frac{ 1 }{ 4 } ) ^ { -2 } \\ = \frac{9}{4}-\left(\frac{1}{2}\right)^{-1}+\left(-\frac{1}{4}\right)^{-2} \\ = \frac{9}{4}-2+\left(-\frac{1}{4}\right)^{-2} \\ = \frac{1}{4}+16 \\ = \frac{65}{4}$

O valor da expressão é $\frac{65}{4}$