$\lim_{h\to0}\left(\frac{cos\left(x+h\right)-cos\left(x\right)}{h}\right)$

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

$\lim_{x\to\infty}\left(x\sin\left(\frac{16}{x}\right)\right)$

$5.25+3.50+6.2$

$y=\left(3x+1\right)\left(2x+5\right)$

$x+\frac{1}{2}>\frac{2}{3}$

$11-2\left(x+3\right)<2\left(1+x\right)$