$-32x^3y^4-56x^4y^3$
$6\tan^2\left(x\right)-6\sec^2\left(x\right)+5\sec\left(x\right)$
$b^2\cdot\left(b-a\right)$
$15-\left(-30\right)$
$\sqrt{2x^4}$
$sec^2\left(70\right)y=\frac{2000}{\frac{4}{tan70}}$
$3+4\left(16-2\cdot4\right)$
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