Question

$( - 2) { - }^{2} + 0.4 { - }^{1} - ( \sqrt{5} ) {}^{0}$
помогите!!!!!
можно с решением

Answer 1

=1/4+1/0,4-1=1/4+10/4-1=
11/4-1=(11-4)/4=7/4

Answer 2

(-2)^-2=1/(-2)^2=1/4
0.4^-1=(4/10)^-1=1/(4/10)=10/4=2.5
(sqrt(5))^0=1
1/4+2.5=0.25+2.5=2.75
2.75-1=1.75