Example

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

Question

$$(6-2 \sqrt{ 2) } (6+2 \sqrt{ 2 } )$$

Answer

28

Solution


Calculate.
\[28\]
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