$\left(4x^2+7y\right)^2$
$9a^2+30ad+25ad^2$
$\left(cot\:x-1\right)^2=csc^2x-2cotx$
$\int\left(2x^2\sqrt{x^2-1}\right)dx$
$\int cos\left(2x\right)\left(sin^2\left(2x\right)+\frac{7}{sin\left(2x\right)}\right)^2dx$
$\frac{16}{6}\:-\:\frac{12}{18}$
$7+1-\left(-8\right)$
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