Dana jest liczba x=9^{ -1/2 } ⋅ (-8)^{ 1/3 }. Wtedy

$\displaystyle x= \frac{2}{3}$\displaystyle x= \frac{2}{3}

$\displaystyle x=- \frac{2}{3}$\displaystyle x=- \frac{2}{3}

$\displaystyle x=- \frac{3}{2}$\displaystyle x=- \frac{3}{2}

$x=-6$x=-6