Question

Calculati radical din 0.09 , (-1) la puterea 4 , (- 1/2) la puterea -1

Answer 1

$\sqrt{0.09} = \sqrt{ \frac{9}{100} } = \frac{3}{10}$
$( - 1) {}^{4} = 1 {}^{4} = 1$
$( - \frac{1}{2} ) {}^{ - 1} = - 2$