$\left(-3.2a+6.2a\right)\cdot\left(a+4a-3a\right)$

$3x^3+23x^2+32x+12$

$\int_0^3\left(\frac{t^2}{\left(1-t^2\right)^{\frac{3}{2}}}\right)dt$

$\int8x\log\left(3x\right)dx$

$y'=\frac{y+1}{x-1}$

$\int\left(\sin^3\left(mx\right)\right)dx$

$\frac{48x-6+3y}{3}$