$\int\frac{3x+4}{x^3-7x+6}dx$
$\left(z-2\right)\left(z+3\right)$
$21\cdot\left(-2\right)\cdot4$
$\sqrt{-729}$
$6x^2\:+\:18x\:-\:24$
$4x+3y=18$
$x^3+2^2-4x-8$
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