Question

mi ajudem pfv nessa questão

Answer 1

a)

$2-\sqrt{900} = 2 - 30 =-28$

b)

$\frac{3}{4}.\sqrt{2,56}=\frac{3}{4}.1,6=\frac{3}{4}.\frac{8}{5}= \frac{3}{1}.\frac{2}{5}=\frac{6}{5}$

C)

$\sqrt{0}- \sqrt[3]{-1} =0-(-1)=0+1=1$

D)
$\sqrt[3]{-\frac{8}{27}} - \sqrt{\frac{25}{64}}=-\frac{2}{3} - \frac{5}{8}=\frac{-16-15}{24}=\frac{-31}{24}$