$\int\:\frac{5x^3-122x-5}{x^2-125}dx$
$\left(x+9\right)\left(7\sqrt{x}+5\right)$
$\frac{5}{x^2-5x}=\frac{1}{x^2-5x}+\frac{1}{x-5}$
$x^2-8x=-1$
$-a^2\:b^8\:-\:c^2$
$80a+60b$
$30x^2+15x-5x^4$
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