若x2+x-1=0,则x3+2x2-7=___.
x2-x-1=0,则2x3+7x2-11x+2012=______.
若1+x+x2+x3=0,求x+x2+x3+…+x2000的值.
若x2+x-2=0,则x3+2x2-x+2007=______.
若x2+x-1=0,则2x3+3x2-x( )
x2+x=1求x3+2x2-7
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______.
已知1+x+x2+x3=0,求x+x2+x3+…+x2004的值.
已知x2+x+1=0则x3+2x2+2x-6=
已知x2+x-1=0,求2x3+3x2-x的值.
函数f(x)=2x3-6x2+7单调递增区间为 ___ .