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|{:(x+y,x,x),(5x+4y,4x,2x),(10x+8y,8x,3x...

`|{:(x+y,x,x),(5x+4y,4x,2x),(10x+8y,8x,3x):}|=x^3`

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The correct Answer is:
`=x^3(5-4)=x^3`
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3y+2x=5,x+2y=4