$\int sin\left(2x+\:\frac{\pi}{2}\:\right)dx$
$b0ca7a$
$\left(x+5\right)^2-10=0$
$x^4-8x^3$
$m^2-36m+324$
$\int\arctan\left(7x\right)dx$
$\lim_{x\to1}\frac{lnx}{5x-2x^2-4}$
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