$\int\cos^{-5}2xsin2xdx$
$\frac{\sin\left(2x\right)}{\sin^2\left(x\right)}=2\cot\left(x\right)$
$x^2-x+xy$
$5x^2-60x+30$
$3-8\cdot8+10$
$-\sqrt{3}\csc\left(x\right)=2$
$2x+x-12=0$
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