$5\int x^3dx$
$\lim_{x\to5}\left(\frac{x-5}{\left(\sqrt[2]{44+x}\right)-7}\right)$
$b^2+14b+40$
$x^2-22x-23$
$\frac{\cos\left(x-y\right)-cos\:\left(x+y\right)}{\sin\left(x+y\right)+sin\left(x-y\right)}$
$-110-60-50+0$
$2\log\left(4\right)+2\log\left(x\right)$
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