若3x^2-x=1,求6x^3+7x^2-5x+2010的值
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若3x^2-x=1,求6x^3+7x^2-5x+2010的值若3x^2-x=1,求6x^3+7x^2-5x+2010的值若3x^2-x=1,求6x^3+7x^2-5x+2010的值6x^3+7x^2-
若3x^2-x=1,求6x^3+7x^2-5x+2010的值
若3x^2-x=1,求6x^3+7x^2-5x+2010的值
若3x^2-x=1,求6x^3+7x^2-5x+2010的值
6x^3+7x^2-5x+2010
x(6x^2-2x+9x)-5x+2010
=x(2+9x)-5x+2010
=9x^2-3x+2010
=3+2010
=2013
6x^3+7x^2-5x+2010
=x(6x^2-2x+9x)-5x+2010
把3x^2-x=1乘以2代入
=x(2+9x)-5x+2010
=9x^2-3x+2010
把3x^2-x=1乘以3代入
=3+2010
=2013
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