Question

очень надо...........................

Answer 1

1) a) 5^-2 = 1/5^2 = 1/25 = 0,04
б)12*3^-3 =12/3^3 = 4/9
в)(27*3^-2)^-1 = (27/9)^-1 = 3^-1 = 1/3
г)(2^-3*2^2)/2^-4 = 2^-1/2^-4 = 2^3 = 8
2) a)x^-3*x^5/x^-6 = x^2 * x^6 = x^8
б)12y^-7:3/4y^-5 = 16y^-2 = 16/y^2