$6x^{6-1}$
$x\left(x+2\right)=624$
$1+\frac{1}{\cos\left(x\right)+\sin\left(x\right)}$
$cos4x=2cos^2\left(2x\right)-1$
$4u+2-3v-2+7+10uv+1-2$
$\int\left(\frac{cos^2x}{cos}\right)dx$
$\left(3x^2-2x^4\right)^3$
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