$\lim_{x\to-1}\left(x^{4\:}-x^3+x^{2\:}\right)$
$-\left(\sqrt{y+2}\right)^2$
$\sin\left(-\frac{24}{25}\right)^2+\cos\left(x\right)^2=1$
$3\left(x+0\right)^3$
$6\left(x^2-2x\right)$
$-8+46+76$
$z-9\sqrt{x}+14=0$
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