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rref{{(1)^2,(1),(1),(20000)},{(1.5)^2,(1.5),(1),(17500)},{(2)^2,(2),(1),(15000)}}
rref{{(1)^2,(1),(1),(20000)},{(1.5)^2,(1.5),(1),(17500)},{(2)^2,(2),(1),(15000)}}
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