$\int\sqrt{108+36x^2}dx$

$\left(-20x^2+105x\right)\left(\frac{1}{2}x\right)$

$\int\left(8x^3\right)\left(\tan\left(3x^4\right)\right)dx$

$\frac{35m^2n}{7m^{-2}n^{-1}}$

$2\sin\left(x\right)^2-3\cos\left(x\right)^2=2$

$\int15x\sqrt{2x-1}dx$

$\int ( x - 2 ) ^ { 2 } d x$