Question

упростите: $frac{x^{2}-4x}{x^{2}+7x}$$frac{24-6x}{49-x^{2}}$

Answer 1

$frac{x^{2}-4x}{x^{2}+7x} : frac{24-6x}{49-x^{2}} = frac{x(x - 4)}{x(x+7)} : frac{6(4 - x)}{(7 - x)(7 + x)} = frac{x(x - 4)}{x(x+7)} * frac{-(x -7)(x + 7)}{-6(x - 4)} =frac{x-7}{6}$

Answer 2

Решение задачи на фото