$x^4-x+2x^3-2$
$x^2-8x\le0$
$24a^2+48ab+36b^2$
$\left(-2\right)^3+\left(\:+3\:\right)^2$
$\left(2xy+z\right)^2$
$\left(3x^2z^5+5y^4\right)^2$
$\left(1+tan^2w\right)cos^2w=1$
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