$\int\:\frac{4x+12}{x^2+2x}dx$
$x\cdot\frac{1}{y}$
$12d-6\left(-11b+18\right)$
$\left(x^2-1\right)y'=1$
$\left(x-3y\right)\left(x-3y\right)$
$-11\:-\:\left(-54\right)$
$7x^4+4x^2+7x+2-6x^3+8x+3$
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