Question

Сократите дробь
$\frac{x^{2} -24x-81}{x-27}$
даю 35 баллов
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Answer 1

$\frac{x^{2}-24x-81 }{x-27}=\frac{x^{2}+3x-27x-81 }{x-27}=\frac{(x^{2}+3x)-(27x+81)}{x-27}=\frac{x(x+3)-27(x+3)}{x-27} =\frac{(x+3)(x-27)}{x-27}=x+3$