Question

1 и 4 задание, номер 281

Answer 1

1)20a^8*(9a)^2=20a^8*81*a^2=1620*a^10

2)(0.2x^7*y^8)^3*6*x^2*y^2=0.008*x^21*y^24*6*x^2*y^2=0.048*x^23*y^26