$528^2-527^2$
$5-x>-6$
$\left(x+16\right)\left(x-7\right)$
$\int\left(3x^2\cdot\cos\left(4x^3+9\right)\right)dx$
$\lim_{x\to0}\frac{sin\left(2x^2\right)}{ln\left(1+x^2\right)}$
$k^2+70k-3$
$\int_{-\infty}^{-1}\left(\ln\left(\left|x\right|\right)e^x\right)dx$
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