$15-2\infty+\infty$
$\int\left(1-x\right)e^{1+x}dx$
$\lim_{x\to0}\left(1-2^x\right)^{\sin\left(x\right)}$
$-850-11000$
$\left(2\cos x+1\right)\left(\cos x-1\right)=0$
$y^66y^2+8$
$\int\left(2\cos\left(x\right)-3\sec^2\left(x\right)\right)dx$
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