$\left(x^2+3xy\right)\left(5y+4x-5\right)$
$\int\:\:x^2e^{4x}dx$
$\sin\left(x\right)^2+\sin\left(x\right)\cos\left(x\right)+\sin\left(x\right)\cos\left(x\right)+\cos\left(y\right)\cos\left(x\right)sin\:$
$\frac{2}{x+1}+\frac{3}{x-1}-\frac{1}{x^2-1}$
$\left(-3\left(5\right)^2+4\left(5\right)\right)$
$5x^2-2x+4-4x^2-5x-3$
$7^{2x+1}-10=333$
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