$\int\left(\frac{4x-3}{2x^2-3x+6}\right)dx$

$\frac{c+3}{15c}+\frac{c}{45}=\frac{1}{5c}$

$\tan^2\left(x\right)\cdot\left(1-\sin^2\left(x\right)\right)$

$\lim_{x\to\infty}\left(\frac{x^2-3x}{2x^3-x^2+2}\right)$

$\int_0^{\frac{\pi}{2}}\left(\frac{1}{cos\left(x\right)}\right)dx$

$-2.5\left(6x-4\right)+16x$

$\left(x+y-2\right)^3$