Question

$8 {}^{ frac{2}{3} } times a - sqrt[3]{( - 8) {}^{ - 2} }$

Answer 1

$8^{ frac{2}{3} } times a - sqrt[3]{( - 8)^{ - 2} } =$

$(2^3)^{ frac{2}{3} } times a - sqrt[3]{left(-2^3right)^{-2} } =$

$2^2 times a - sqrt[3]{left(-2right)^{-6} } =$

$4times a -(left(-2right)^{-6})^{ frac{1}{3} } =$

$4times a -left(-2right)^{-2})=$

$4times a -left(- frac{1}{2} right)^{2}=$

$4times a -frac{1}{4}$

Answer 2

Спасибо вам огромное!

Answer 3

-1/4

Answer 4

спасибо

Answer 5

:)