$6\:\left(2x\:+\:2\:\right)\:<\:2\:\left(2x\:+\:8\right)$

$\int_{2.7}^0\left(x^3e^{ln\left(x^3\right)}+2x\cdot ln\left(3+x^2\right)\right)dx$

$\left(x+3\right)\:^2-4=0$

$\lim_{x\to\infty}\left(\frac{15x+logx}{x}\right)$

$4\sin^2+5\cos^2$

$\:\frac{8x^3+1}{2x-1}\:$

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