Question

-5-[(-5)²-(-2-√49).5]:10=

Answer 1

$A=-5-[(-5)^2-(-2-\sqrt{49})\times5]\div10$

$A=-5-[25+(2+7)\times5]\div10$

$A=-5-[25+45]\div10$

$A=-5-7$

$A=-12$