The difference of the squares of two terms, divided by the sum of the same terms, is equal to the difference of the terms. In other words: $\displaystyle\frac{a^2-b^2}{a+b}=a-b$.
Evaluate the limit $\lim_{z\to4}\left(\sqrt{z}+2\right)$ by replacing all occurrences of $z$ by $4$
Calculate the power $\sqrt{4}$
Add the values $2$ and $2$
Try other ways to solve this exercise
Get a preview of step-by-step solutions.
Earn solution credits, which you can redeem for complete step-by-step solutions.
Save your favorite problems.
Become premium to access unlimited solutions, download solutions, discounts and more!