Question

Meninas  re meninos inteligentes, me ajudem

Answer 1

a)$\frac{3}{4} ^{-2} = \frac{4}{3} ^{2} = \frac{16}{9} = 1,777...$
b)$\frac{4}{9} ^{-2} = \frac{9}{4} ^{2} = \frac{81}{16} = 5,0625$
só consegui esses