$ln\left(\frac{3-x-x^2}{\sqrt{2+x-x^2}}\right)$
$-4+2-8-3+3-5+4-10$
$\left(x^2\:-\:5\right)^2\:2x$
$\frac{1}{\sec\left(-x\right)\tan\left(x\right)}=\csc\left(x\right)-\sin\left(x\right)$
$4x+10>4-2x$
$n\left(4x^2-7xy\right)^2$
$\cos^2x-\sec^2x$
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