$\left(4\sqrt{x}-2\right)^2$
$\left(7+2i\right)-\left(7-3i\right)$
$\left(3x^2-5\right)\left(3x^2-8\right)$
$\int_{x^2}^{x^3}\left(t+1\right)^3dt$
$36\cdot x^2+120\cdot x+100$
$\:\frac{5sin^2t}{tan^2t}=\:5\:cos^2t$
$\frac{dx}{dt}=\frac{1}{t^2-3t+2}$
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