$3<4x+2$

$\frac{3}{25}am-1-\frac{7}{50}bm-2+\frac{1}{5}am-1-\frac{1}{25}bm-2-0.2am-1+\frac{1}{5}bm-2$

$\left(\cos\left(30\right)\cdot2-\sqrt{3}x\right)^2$

$2z'+3z=8$

$\lim_{x\to\infty}\frac{2^x}{3^{x-1}}$

$f\left(x\right)=\ln\left(\cos^2x\right)$

$\left(2+1\right)^2\cdot\left(-5\right)$