Question

Сократите дробь (алгебра, 7 класс):

Answer 1

$a) \frac{48p^{3}q^{4}}{36p^{2}q^{3}}=\frac{4pq}{3} \\ b) \frac{x^{2}+6x+9}{x^{2}-9}=\frac{(x+3)^{2} }{(x-3)(x+3)}=\frac{x+3}{x-3}$

Answer 2

Ответ:

а)

$\frac{48p {}^{3} q {}^{4} }{36p {}^{2} q {}^{3} } = \frac{4pq}{3}$

б)

$\frac{x {}^{2} + 6x + 9 }{x {}^{2} - 9 } = \frac{(x + 3) {}^{2} }{x {}^{2} - 3 {}^{2} } = \frac{(x + 3) {}^{2} }{( x - 3)(x + 3)} = \frac{x + 3}{x - 3}$