$\frac{d}{dx}\sqrt{2x^2-23}\:$
$\frac{6x^4-15x^2-3x+10}{x-1}$
$sin\left(a-\frac{3\pi}{2}\right)=\cos\left(a\right)$
$\sqrt{\frac{1}{4}}a^4b\:\sqrt{\frac{1}{16}}a^3b^4$
$x^2+2x+35$
$2x^2-10x+2y^2+6y-15=0$
$\left(7mn+9p\right)\left(7mn\:-\:9p\right)$
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