Question

Nu mai știu formula dacă ma pote ajuta cineva va rog

Answer 1

$\it \Big(\sqrt{\dfrac{2}{3}}\Big)^{-2}=\Big(\dfrac{\sqrt2}{\sqrt3}\Big)^{-2}=\Big[\Big(\dfrac{\sqrt2}{\sqrt3}\Big)^{-1}\Big]^2=\Big(\dfrac{\sqrt3}{\sqrt2}\Big)^{2}=\dfrac{3}{2}=1,5$

Answer 2

Răspuns:

(√3/2)²=3/2;  a-²=1/a²

Explicație pas cu pas: