Example

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

Question

$$( \frac{ \sqrt{ 3 } }{ 2 } -1)( \frac{ \sqrt{ 3 } }{ 2 } +1)$$

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