No, the second one is not (-5)². It is (-5²)=-(5*5)=-25 which is completely different. In that case the minus stays. That means that after the multiplication the expression becomes 25-(-25)=25+25=50
No, the second one is not (-5)². It is (-5²)=-(5*5)=-25 which is completely different. In that case the minus stays. That means that after the multiplication the expression becomes 25-(-25)=25+25=50