∵二分之一|a-b|+√2b+c+c的平方-c+四分之一=0∴1/2|a-b|+√(2b+c)+(c-1/2)²=0∴a-b=0 2b+c=0 c-1/2=0∴c=1/2 a=b=-1/2·c=-1/4∴±√[-a(b+c)]=±√[1/2(-1/4+1/2)]=±√(1/8)=±1/4·√2...