Question

Simplify. Root 7 + root 8 = ?

Answer 1

Dear student
$$\begin{gathered} \sqrt{7}+\sqrt{8} \\ =\sqrt{7}+\sqrt{2\times 2\times 2} \\ =\sqrt{7}+\sqrt{\underline{2\times 2}\times 2} \\ =\sqrt{7}+2\sqrt{2} \end{gathered}$$
Regards