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


Răspuns :

4-2^-2=
4-2-4=
=(-6)
Nu stiu daca e corect
[tex]4-2^{-2}=4- \frac{1}{2^{2}}=4- \frac{1}{4}= \frac{16}{4}- \frac{1}{4}= \frac{15}{4} [/tex]