$4cos^2x-3=0$
$x^2y^2-4x=5$
$2x-4x-16$
$\left(x-4\right)^2+\left(x+2\right)^2=20$
$n^3-513$
$\left(x+2y+4\right)\left(x+2y-4\right)$
$\int5x^2sin\left(8x\right)dx$
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