2X²+1=3X
解:移项:2X²-3X=-1
两边除以2:X²-(3/2)X =-1/2
配方得: (X-3/4)² =1/16
开平方得: X-3/4 =±1/4
∴ X1=1,X2=1/2
(2x-1)(x-1)=0
2x^2-3x+1=0
(2x+1)(x+1)=0
x=-1/2 x=-1
2X2+1=3x
2X2-3x+1=0
(x-1)(2x-1)=0
x=1 or x=1/2
改写成(x-3/4)*(x-3/4)-1/16=0 再解