$\frac{4x^3+8x^2+7x+7}{2x+3}$
$f.\:\left(2m-3n\right)\left(\:2m+3n\right)$
$\left(-7mn^6\right)\left(-3mn\right)\left(-5m^6n^3\right)$
$x+\frac{2}{x^2-1}$
$\sec\left(a\right)\sec\left(a\right)\cot\left(2\right)a$
$\left(4\sqrt{3y^5}\right)^2$
$10-20+30-40+50-6g$
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