Question

(-3a)^2=?
..............

Answer 1

(-3a)^2= 9a²
........................

Answer 2

$(-3a)^{2}=9a^{2}$



$(-3*a)^{2}=(-3*a)(-3*a)=a*a*(-3)*(-3)=a^{2}*9=9a^{2}$

$\boxed{-~la~putere~para~da~+}$

$Aici~si~-3~se~ridica~la~patrat.~Dispare~minusul~(devine~"+"~prin~ridicarea~la~puterea~2~)$