$\int\left(\frac{7x^2+2x-3}{\left(2x-1\right)\left(3x+2\right)\left(x-3\right)}\right)dx$

$b-23=43$

$\int\left(x^2\left(x^3-2\right)^2\right)dx$

$\left(4b^{-3}\right)^3$

$\left(v^{-4}\right)^{-3}$

$100a^2-225$

$\int\left(\frac{\sin\left(2\cdot x\right)}{4\cdot\sin\left(x\right)^2+5\cdot\cos\left(x\right)^2}\right)dx$