#### Series and Redical-Root Calculator

The radical is in simplest form when the radicand is not a fraction. We know that a radical expression is in its simplest form if there are no more square roots, cube roots, 4th roots, etc left to find. For example take the example of 250 as follows: $$\text {we can rewrite 250 as } 5 \times 5 \times 5 \times 2$$ $$\text {This can be written in radical form : } \sqrt { 5 \times 5 \times 5 \times 2}$$ $$= \sqrt{ 5^{2}\times 5 \times 2}$$ $$= \sqrt { 5^{2}\times 10}$$ $$= 5 \sqrt { 10}$$