Question

(1/root5-2 + 1/root5+2)^2

Answer 1

Answer:

20

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors.

=> it will be

=$\frac{1}{\sqrt{5}-2}+\frac{1}{\sqrt{5}+2}^{2}$

=>rationalize the denominator it will be

=$\sqrt{5}+2+\sqrt{5}-2$

=>it will be

=$\sqrt[2]{5}$

=>20