$2\left(x+y\right)+\left(y+x\right)=310$

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

$\:30+2t\:$

$\left(2x+1\right)\left(-x^2+\frac{5}{2}x-\frac{3}{4}+\frac{3}{4\left(2x+1\right)}\right)$

$2+2+2+1+1+1+-1+-1+-1+-2+-2+-2+-3+-3+-3$

$4m^2+8m+4$

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