$-3^2+10^2$
$9t^2-36+144$
$\int\frac{\sin x}{16+\cos^2x}dx$
$\frac{1-csc\left(x\right)}{cos\left(x\right)-cot\left(x\right)}=\:secx$
$x^2+11x+30$
$9-\left(12-6+2\right)+4+\left(-8+1\right)$
$-2\left(8x-2\right)+6x+5$
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