Question

Упростите выражение 3 целых 3/7 х^5 у^6•(-2 целых 1/3 х^5 у)^2

Answer 1

$3 \frac{3}{7} {x}^{5} {y}^{6} \times ( - 2 \frac{1}{3} {x}^{5} y)^{2} = \\ \frac{24}{7} {x}^{5} {y}^{6} \times ( - \frac{7}{3} {x}^{5} y)^{2} = \\ \frac{24}{7} {x}^{5} y ^{6} \times \frac{49}{9} {x}^{10} {y}^{2} = \\ \frac{56}{3} {x}^{15} {y}^{8} = 18 \frac{2}{3} {x}^{15} {y}^{8}$