x∧4+2x∧2+1=0,求根x∧4+2x∧2+1=0(x²+1)²=0x²+1=0x²=-1<0方程在实数范围无解.
x∧4+2x∧2+1=0(x^2+1)=0x^2+1=0x^2=-1x=i或x=-i
