1/4x^2+|3-2x|=51/4x^2+3-2x=51/4x^2-2x-2=0a=1/4 b= -2 c= -2b^2-4ac=(-2)^2-4*1/4*(-2)=8x= -b正负根号b^2-4ac------------------2ax=2正负2倍根号2--------------2分之1x1=1+根号2x2=1-根号2