$1x^2+6x+1$
$\int\left(k+2\right)\sin\left(k^2+4k-6\right)dx$
$-7x^3ex^2$
$2sin^2\left(x\right)-9sin\left(x\right)-5=0$
$\left(a^w-w\right)^2$
$\left(m-12\right)\left(m+7\right)$
$\frac{2x+4}{x+2}=-2$
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