$\frac{2x^4+3x^2+x+1}{x^2-1}$
$\sqrt{3}\sin\left(2x\right)=2\cos^2\left(x\right)$
$78\left(-25\right)$
$\left(3m+2\right)^4$
$\frac{\sqrt{3x+2y}-\sqrt{2x}}{3y}$
$\left(3x^3-y^3\right)^3$
$6a-48$
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