$8x^{2}-16x+4$
$\frac{\left(2x^2+7x-4\right)}{\left(x^2+x-2\right)}$
$\int_1^3\left(e^{-3x}\right)dx$
$\left(x-4\right)\left(x+5\right)\left(x+4\right)$
$\frac{140\sin110^{\circ}}{\sin38^{\circ}}$
$4x\:-\:y\:+\:z\:con\:-3x\:+\:2y\:-9z$
$\int\cos\left(\sqrt[4]{x-1}\right)dx$
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