$1-\tan a^2=\sec^2a$
$8h+7\left(2+4h\right)$
$13=3+2u$
$x^2-4x+45$
$f\left(x\right)=10+12x^2-3x^2-2x^3$
$\frac{dy}{dx}=\tan\left(x\right)=y$
$-50+\left(-214\right)+216+\left(-93\right)$
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