1) (0,25a^-2)^2 4^3 a^3 = (0,25)^2 a^(-4) 64 a^3 = 0,0625 a^(-4) 64 a^3 = 4a^3 / a^4 = 4 / a = 2^2 a^(-1)
2) 2^3 : 8 a^-2 = 8 a^2 = 8a^2 / 8 = a^2 = a^2
3) (8x^-2)^3 (2^-4/x^-2 y^-2) = 512x^(-6) (1/16x^2 y^2) = 512 / 16 = 32 and x^(-6) * x^2 = x^(-4) = 32y^2 = 0,125y^3
4) 5^3 : 75 / 1 b^(-2) b = 125 / 75 b^(-1) = 5 / 3 b^(-1) = 5 / 3b^3 = 5 / 3b^(-3)
1) (0,25a^-2)^2 4^3 a^3 = (0,25)^2 a^(-4) 64 a^3 = 0,0625 a^(-4) 64 a^3 = 4a^3 / a^4 = 4 / a = 2^2 a^(-1)
2) 2^3 : 8 a^-2 = 8 a^2 = 8a^2 / 8 = a^2 = a^2
3) (8x^-2)^3 (2^-4/x^-2 y^-2) = 512x^(-6) (1/16x^2 y^2) = 512 / 16 = 32 and x^(-6) * x^2 = x^(-4) = 32y^2 = 0,125y^3
4) 5^3 : 75 / 1 b^(-2) b = 125 / 75 b^(-1) = 5 / 3 b^(-1) = 5 / 3b^3 = 5 / 3b^(-3)