$h^2-\frac{3}{4}+\frac{3}{8}$
$\left(3x+9\right)\left(3x-9\right)$
$\lim_{x\to0}\sqrt[2]{5x^2}$
$12qz+24qy+2qz+4ty$
$\lim_{x\to-1}\:3x^3-2x^2+5x+7$
$65.025+0.0005$
$\left(10x^3+9xy^5\right)$
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