若x2-2x+1=0,则2x2-4x=______.
若一元二次方程x2+2x-1=0,则2x2+4x值为______.
若x2+x-2=0,则x3+2x2-x+2007=______.
x2-x-1=0,则2x3+7x2-11x+2012=______.
若x2+3x-2=0,则x3+5x2+4x+18=______.
若x2+3x-2=0,则2x3+6x2-4x的值为______.
已知x2+4x+y2-2y+5=0,则x2+y2=______.
已知x2+x-1=0,则x3+2x2+2004=______.
已知x2+x-1=0,则x3+2x2+2011=______.
已知x2-x-1=0,则-x3+2x2+2005的值为______.
若(x2-5x+6)2+|x2+3x-10|=0,则x=______.
若方程x2-2x-2499=0的两根为x1、x2,且x1>x2,则x1-x2的值为______.
已知x2+x-1=0,则x3-2x+4的值为______.