$\int-\left(x+1\right)\cdot e^{2x}dx$
$\frac{x^2+x^2}{x+1}$
$m=\sin\left(1\right)-\cos\left(2\right)+\tan\left(3\right)$
$-15-\left(-11\right)+5\cdot\left(-4\right)$
$\int\frac{3x+7}{\left(x+2\right)^2}dx$
$9x+3=5x+3$
$120x^4y^2\:+\:180x^3y^3\:-\:240x^2y^4$
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