$\lim_{x\to2}\frac{\sin\left(x\right)}{x}$
$-3^2-2\cdot5$
$2\left(\infty\right)-\frac{\infty^5}{5}$
$dy=-2xy^2dx$
$3x+2\ge6x-5$
$\int_{-\pi}^{\pi}cos\left(\frac{x}{2}\right)dx$
$x^6-14x^3+49$
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