$x^2-18x-88$
$5\left(7-2a\right)+6\left(a-1\right)$
$\int\left(\frac{\frac{5}{3}x^4}{\left(4-x\right)^{\frac{1}{5}}}\right)dx$
$\left(\frac{1}{2}\left(x^2-\frac{1}{x^2}\right)\right)^2$
$x+2x+5x-4y+7y-5y$
$3sin\left(2x\right)-2=2sin\left(2x\right)-3$
$\left(1-cos^2\:x\right)cos^2x$
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