Example

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

Question

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

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