$4\cos^26x-2$
$a2+12a-28$
$\int\frac{2x+9}{x^2+9x+2}dx$
$\frac{16x^4-18x^3-20-7}{2x-4}$
$\frac{\frac{1}{\csc\left(x\right)}}{\cos\left(x\right)-\frac{1}{\sec\left(x\right)^3}}=\frac{1}{sinxcosx}$
$\frac{9x^2}{4}+30xy+125y^2$
$\int10xln2xdx$
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