$\int\sqrt{1+16x^2}dx$
$8cos^2\left(t\right)=-2sin\left(t\right)+7$
$\int\left(\cos\left(4x\right)\sin^5\left(4x\right)\right)dx$
$-11k+1+k^2$
$\cos\left(x\right)\cdot\sec\left(x\right)+\sin\left(-x\right)\cdot\csc\left(x\right)=0$
$\left(2x^3-4\right)\left(2x^3+4\right)+2\left(x^3-2\right)\left(x^3-3\right)$
$6e^{5x}+12e^{4x}-18e^{3x}$
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