$4+3\cdot\left(18-2\cdot3\right)$

$\lim_{h\to0}\left(\frac{\frac{1}{\sqrt[2]{x+h+1}}-\frac{1}{\sqrt{x+1}}}{h}\right)$

$2-cos\left(\theta\right)=2sin^2\left(\frac{\theta}{2}\right)+1$

$-5x+3\:para\:x=-2$

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

$\left(2x+1\right)y'+y=\left(1+2x\right)^{\frac{3}{2}}$

$\left(6x^3-4x^2+5x-2\right)\cdot\left(3x^3-4x^2+5x+3\right)$