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

$5-2x\ge1$

$\frac{dy}{dx}+\frac{2xy}{x^2+1}=\frac{1}{x^2+1},\:y\left(0\right)=3$

$\log\left(12\right)-\log\left(4\right)-\log\left(3\right)$

$\left(1+sin\:x\right)\left(sec\:x\:-\:tan\:x\right)$

$\frac{1}{3}k+9=24$

$12m+5n+7m^2+10m$