$5x^2+40x+15$
$-\sin\left(x\right)\sec\left(x\right)-\cos\left(x\right)\csc\left(x\right)=-\sec\left(x\right)\csc\left(x\right)$
$\left(\sqrt[6]{x^7}\right)\left(\sqrt[4]{x^3}\right)\left(\sqrt[7]{\left(x^3\right)^3}\right)\left(\sqrt[4]{\left(x^3\right)^4}\right)$
$dz=2x^2y^3$
$\frac{-1}{4}a>-1$
$28-5x<2x+9$
$4^2+8-3$
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