$\left(3x^2+7\right)^2$
$2-8cos^2y\:=\:0$
$\left(-m-7\right)\left(-m+7\right)$
$4x+8x-7y+5y$
$9x^2+42x+25$
$\frac{2}{5}x^5-\frac{6}{5}x^4+\frac{14}{15}x^2$
$\int\left(x^3\cdot\cos\left(3x-5\right)\right)dx$
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