$7r\ge-98$
$\sqrt{9-4}$
$3z^2+14z-24$
$6x^2-18x-24$
$\left(x+1\right)^2+\left(x-2\right)^2=\left(x+2\right)^2+\left(x-1\right)^2$
$\cos\:\left(5x\right)\sin\:\left(2x\right)-\sin\:\left(5x\right)\cos\:\left(2x\right)$
$\left(2\left(29\right)+2\right)$
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