Question

cat e:
{0.5}^{ - 2}
urgent!!!!​

Answer 1

Salut,

$0,5^{-2}=\dfrac{1}{0,5^2}=\dfrac{1}{\left(\dfrac{1}2\right)^2}=\dfrac{1}{\dfrac{1}{2^2}}=1\cdot\dfrac{2^2}1=4.$

Ai înțeles ?

Green eyes.