Question

$( - 0,2 ) ^{3} - ( -) ^{9} + 0, 408+ \frac{2}{5} * \sqrt{0,0625} - \sqrt{5} ( \sqrt{5} - \frac{2,5}{ \sqrt{5} } )$

Answer 1

-o,oo8-(-1)+0,408 +2/5.√625/10000-√5.(5-2,5)/√5=
-0,008+1+0,408 +1/10-2,5=

-8/1000+1 +408/1000+1/10-25/10=-8/1000 +100/100+408/1000+100/1000-250/100=
amplificand numitorul comun fiind 1000
(-8+1000+408+100-2500)/1000=-1000/1000=-1