$\frac{1-x^3}{1+x}$
$\sqrt[6]{6}\sqrt[6]{288}$
$\sin z\cos z\cot z+\tan z\cos z\sin$
$5x^2+2\left(5x^2\right)\left(4\right)+4^2$
$x^2+6x-133$
$\frac{\sin u\left(cos^2u\right)+sin^3u}{sin^2u}$
$2\left(x+3\right)+5\left(x-2\right)\le2x-1-2\left(x-3\right)$
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