Question

$( \frac{2}{5} )^{2} + - ( \frac{1}{2} ) { }^{ - 2}$
ayuda!!!
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Answer 1

Explicación paso a paso:

$({ \frac{2}{5} })^{2} + - ( { \frac{1}{2} })^{ - 2} \\ \frac{4}{25} - {2 }^{2} = \frac{4}{25} - 4 \\ = \frac{4 - (25 \times 4)}{25} = - \frac{196}{25}$