$3 a + 8 b + 2 - 19 - 8 c - 4$
$a+16=25$
$-25c^2b^3d+10b^2d^5-15c^3b^2d$
$\int xe^{x^2-5}dx$
$\frac{\tan^2\left(x\right)}{\sin\left(x\right)}+\sec^2\left(x\right)$
$-9\left(x-2\right)$
$\left(2y+9\right)\left(2y+7\right)$
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