Example

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

Question

$$\frac{ { d }^{ 2 } y }{ d { x }^{ 2 } } -2 \times d \frac{ y }{ x } +y=xx$$

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