Question 80

$$\frac{2}{\sqrt{10 + 2\sqrt{21}}} - \frac{1}{\sqrt{12 + 2\sqrt{35}}} - \frac{1}{\sqrt{8 + 2\sqrt{15}}} =$$

Solution

given that

= $$\frac{2}{\sqrt{10 + 2\sqrt{21}}} - \frac{1}{\sqrt{12 + 2\sqrt{35}}} - \frac{1}{\sqrt{8 + 2\sqrt{15}}} $$

we know that $$\sqrt{21}$$ = 4.58 , $$\sqrt{35}$$ = 5.91 , $$\sqrt{15}$$ = 3.87

put the value in the equation we get

= $$\frac{2}{\sqrt{19}} - \frac{1}{\sqrt{19}} - \frac{1}{\sqrt{19}} $$

= 0 Answer

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