$\left(\tan\left(x\right)+\sec\left(x\right)\right)^2=\frac{1+\sin\left(x\right)}{1-\sin\left(x\right)}$
$\left(z+w\right)^7$
$\frac{k}{3}=-13$
$\frac{dy}{dx}\:x^2=y\left(y+3\right)$
$( - 6 m + 9 ) ( - 6 m ^ { 4 } - 9 )$
$-1.2+3.4$
$-36\:-\:\left(-66\right)$
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