$100^2+20x+1$
$x^2\frac{dy}{dx}+x^2+x^2y^2=1+y^2$
$x^2=9y$
$x^3+8x^2-29x+44$
$\left(6x\:-\:6x\right)+\left(8x\:-9x\right)$
$3\cdot\left(1.5\right)^2-2\cdot\left(1.5\right)-1$
$2x^2-x\:+5\:\:;x=8$
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