$\left(x^a\right)^2$
$\left[\left(4m\:-\:5\right)2\:+\:10m\:+\:25\right]\:$
$2x^2-11x+15=0$
$\sqrt{25-0.1x}=\sqrt{9+0.1x}-2$
$5^2-2\cdot5-3$
$4\sin\left(z\right)cos^2\left(z\right)=3\sin\left(z\right)$
$\frac{4x^4-2x^2-1}{x+2}$
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