Question

raiz quadrada de 9 -dois terços elevado a menos2 +2 quintos multiplicado por um quarto é?por favor me ajudem e para amanha lhes imploro

Answer 1

$\sqrt{9} - \frac{2}{3} ^{-2}+ \frac{2}{5} * \frac{1}{4} \to \\\\ \sqrt{9} - \frac{3}{2} ^{2}+ \frac{2}{5} * \frac{1}{4} \to \\\\ 3 - \frac{4}{9} + \frac{2}{5} * \frac{1}{4} \to \\\\ mmc=180\\\\ \frac{540-80+72*45}{180} \to \\\\ \frac{540-80+3240}{180} \to \\\\ \frac{3700}{180} \to \\\\ \frac{185}{9} \to \\\\ 20, 555...$

Answer 2

√9 - (2/3)⁻² + (2/5).(1/4) = 3 - (3/2)² + 2/20 = 3 + 9/4 + 1/10 = 60/20 + 45/20 + 2/20 = 197/20