Question

-0,8*(-5)^2-5-^2+0,2^2 решитее плииз

Answer 1

$-0.8*(-5)^2-5^{-2}+0.2^2=-0.8*5^2- frac{1}{5^2}+0.04= \ =-0.8*25- frac{1}{25}+0.04=-20-0.04+0.04=-20$