Question

Сократите дробь: 10x-x²-25 / 3x-15
A) x+5 B) 5-x / 3
C) x+5 / 3 D) x-5

Answer 1

$frac{10 times - times {}^{2} - 25}{3 times - 15}$
$frac{ - 1( times {}^{2} - 10 times + 25)}{3 times - 15}$
$frac{ - 1( times - 5) {}^{2} }{3( times - 5)}$
$frac{ - times + 5}{3} = frac{5 - times }{3}$
Ответ: В