$4\left(x+2\right)-3\left(x-5\right)\le2\left(x+5\right)$

$\lim_{y\to0}\left(\frac{\sqrt{7-2y}-\sqrt{7}}{-\frac{4}{5}y}\right)$

$\arctan\frac{4}{4}$

$-6x-12+8y+16x$

$7,24+9,1$

$-6\cos\left(x\right)^2+3\sin\left(x\right)-\sin\left(x\right)^2$

$\left(f\:+\:8\right)\:\left(f\:-\:3\right)\:$