$\int9\left(x+4\right)^5dx$

$\int\frac{x^2-x+1}{\left(x+3\right)\left(x-1\right)}dx$

$\frac{\left(x^3-4\right)}{\left(x+1\right)}$

$3\tan^2\left(x\right)+5\sec\left(x\right)+1$

$\left(-x-2\right)^2=\left(x+2\right)^2$

$\left(3+2y\right)\cdot x\cdot dx+\left(x^2+2\right)-dy=0$

$180\cdot25$