$\int6\left(x+15\right)^2dx$

$45r^3-10r^3$

$\left(1-\sin\left(a\right)^2\right)\frac{\sin\left(a\right)}{\cos\left(a\right)}=\sin\left(a\right)\cos\left(a\right)$

$\left(5\right)\cdot\left(-1\right)\cdot\left(0\right)$

$\int\left(8x+3\right)\ln\left(3x\right)dx$

$4x-3+15-7$

$\frac{dy}{dx}=43y-3y^2$