$9\left(2+1\right)-12+4$
$\int_0^5\left[\sin\left(5x\right)+\left(3x-1\right)\right]^2dx$
$\left(6x-6y\right)\left(6x+6y\right)$
$\int\sin^{3\:}x\sin2x\:dx$
$\int\left(x\cdot\cos\left(4x^2\right)\right)dx$
$simplfy\:2cos\left(x+y\right)cos\left(x-y\right)\:-cos\left(2x\right)$
$2x^2-mx-4m-n=mx^2+mx+yx+4y$
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