Question

[tex] -2^{2} = -4 sau 4?

Answer 1

Ca sa nu existe confuzii:
[tex]-2^2=-4\\ (-2)^2=4[/tex]

Answer 2

$\;(-2)^2=(-2\cdot(-2)=+4$
$iar\\ -2^2=-(2\cdot2)=-4$