$18\left(-11+9y\right)-3y$
$\int5x^2e^{8x}dx$
$\left(2x^2+2x\right)+\left(3\cdot5x\right)$
$\int\left(\frac{sin\left(45x\right)}{1+\cos^2\left(45x\right)}\right)dx$
$64x^2+48xy\:+9y^2$
$-4\left(-12+\left(1-4\right)^2\right)$
$\left(-43\right):\left(-43\right)$
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