Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\sqrt{ 23-8 \sqrt{ 7 } } + \sqrt{ 23+8 \sqrt{ 7 } }$$

Answer

8

Solution


Calculate.
\[8\]
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