$\int\left(\sin^2\left(\frac{x}{2}\right)\cos\left(\frac{x}{2}\right)\right)dx$
$\lim_{x\to0}\left(\frac{\sqrt{1+x}-\sqrt{1-x}}{\sin\left(x\right)}\right)$
$\left(-1\right)^2-2\left(-1\right)\left(2\right)+\left(2\right)^2$
$70\cdot70$
$\frac{sin4x}{cos2x}$
$16ab^3-43ab^3$
$y^2+2y\cdot y^2+2y$
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