$4b^2+3b^2-4b$

$\int\frac{1}{\left(x^2+4x+5\right)}dx$

$\int_1^2\left(\frac{24}{t^4-6t^3}\right)dt$

$\frac{2x+8}{x-2}=-1$

$\left(\frac{m^2}{3}+\frac{2}{5m}\right)\left(\frac{m^2}{3}-\frac{2}{5m}\right)$

$1+\frac{1}{y}=x^{-1}e^c$

$6\sin\left(x\right)^2+3\sin\left(x\right)=0$