1) 9^-2×27^2/3 2) x+7×^1/2 / x^1/2+7(дробь)

Question

1) 9^-2×27^2/3
2) x+7×^1/2 / x^1/2+7(дробь)

Answer 1

1) (1/9^2*27^2)/3=3^2/3=3;
2) х^1/2(х^1/2+7)/(х^1/2+7)=х^1/2.