若x^2-2x=1,则2x^2-4x+2010
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若x^2-2x=1,则2x^2-4x+2010若x^2-2x=1,则2x^2-4x+2010若x^2-2x=1,则2x^2-4x+20102x^2-4x+2010=2(x^2-2x)+2010=2+2
若x^2-2x=1,则2x^2-4x+2010
若x^2-2x=1,则2x^2-4x+2010
若x^2-2x=1,则2x^2-4x+2010
2x^2-4x+2010
=2(x^2-2x)+2010
=2+2010
=2012
2x^2-4x+2010
=2(x^2-2x)+2010
=2*1+2010
=2+2010
=2012
2x^2-4x+2010
=2(x^2-2x)+2010
=2*1+2010
=2+2010
=2012
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