$\int7te^tdt$
$\int\frac{7}{1+x+x^2}dx$
$3\cos^2\left(8x\right)-3\sin^2\left(8x\right)$
$-7b\left(9b^3c+1\right)$
$\int\left(\frac{sin\left(x^2\right)-120cos\left(x\right)+120}{x}\right)dx$
$xy=y+\sqrt{y^2-x^2}$
$\left(m^{2}-m-1\right)\left(m^{2}-m+1\right)$
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