$\left(\frac{1}{2}x+3\right)^3$
$\int\frac{x-1}{x\left(x+1\right)^2}dx$
$\int\frac{\sin\left(\frac{1}{x^n}\right)}{x^{n+1}}dx$
$x=37.64y+0.25$
$\int\frac{2x}{e^2}dx$
$x+4y=23$
$240+60-70$
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