$100v^2-220+121$
$\frac{18x\left(x+2\right)^3\left(x-2\right)}{6x^2\left(x+2\right)^2}$
$-2\sin^2\left(x\right)+\sin\left(x\right)+1=0$
$x^2-2x\ge3$
$\left(3x-\frac{1}{2}y\right)^4$
$6+\frac{9}{7}n=24$
$x^2y^2+2x^2y+y^2$
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