$528^2-527^2$
$\int_0^1\left(35+18\cos\left(x\right)\right)^{-1}dx$
$-5x^3+5x^2+30x$
$2x+7=3x-5$
$1+2+3+4+5-6$
$10^3\cdot10^{15}$
$\sin x+\cos x=\frac{1+\frac{sinx}{\cos x}}{\frac{1}{\cos x}}$
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