Question

4-2^-2=?
Coroana... (^-2 inseamna la puterea -2)

Answer 1

4-2^-2=
4-2-4=
=(-6)
Nu stiu daca e corect

Answer 2

$4-2^{-2}=4- \frac{1}{2^{2}}=4- \frac{1}{4}= \frac{16}{4}- \frac{1}{4}= \frac{15}{4}$