Example

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

Question

$$( \frac{ 2 }{ 5 } x- \frac{ 3 }{ 4 } y)( \frac{ 2 }{ 5 } x+ \frac{ 1 }{ 4 } y)$$

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