$3x^2-4x+8$
$\int\left(\frac{1}{\left(81x^2+1\right)^{\frac{3}{2}}}\right)dx$
$x^2-12x-1=0$
$\left(2y^2+2\right)^2$
$12-\left(-8+15-3+7\right)$
$\left(a+6\right)\left(4a-8\right)$
$2cot\left(2x\right)=\frac{cos\:x}{sin\:x}-\:\frac{sin\:x}{cos\:x}$
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