$\int cos^5\left(3x\right)sin^2\left(3x\right)dx$
$\left(14\right)\left(21\right)\left(32\right)$
$\int_0^{\infty}\left(\frac{10\sin\left(x\right)}{x^2}\right)dx$
$\int4xe^{5x}dx$
$r-1stu-1r-7s-1tu6r-3s-1tu$
$1x-6x-2x$
$\left(x+y+1\right)\left(x+y-1\right)=1$
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