Question

0.2^-3*25^-2+0.25^-1*5^-1-(-6)^0*81^-2*27^3

Answer 1

Cделаем по частям:
1) 0,2^-3= (1/5)^-3 = 5^3
    25^-2= (5^2)^-2 = 5^-4
    5^3*5^-4= 5^-1 = 1/5
2) 0,25^-1 = (1/4)^-1 = 4
3)5^-1 = 1/5
4) (-6)^0 = 1
5) 81^-2=(3^4)^-2= 3^-8
   27^3 = (3^3)^3 = 3^9
   3^-8*3^9 = 3
6)1/5 + 4*1/5 - 1*3 = 1/5 +4/5 -3 = 1 -3 = -2