$\int\frac{2u}{4u^2-1}du$
$\frac{1+\sqrt{x+h}-1-\sqrt{x}}{h}$
$-9y+3z\left\{5x-10y-8z-\left(2x-6y+7z-\left[2x-3y\right]\right)\right\}$
$\frac{8a^4b^5}{4a^2b}$
$\sin\left(2x\right)=-0.25$
$3x^2+3x-2x-2$
$\left(\frac{3}{4}x^2-2y^4\right)\left(\frac{3}{4}x^2+2y^4\right)$
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