1.x^2=2x
x²-2x=0
x(x-2)=0
x=0或x=2
2.(x+1)^2-(2x-3)^2=0
(x+1+2x-3)(x+1-2x+3)=0
(3x-2)(4-x)=0
x=3/2或x=4
3.x^2-6x+8=0
(x-2)(x-4)=0
x=2或x=4
4.(1+√2)x^2-(1-√2)x=0
x[(1+√2)x-(1-√2)]=0
x=0或x=(1-√2)/(1+√2)
x=0或x=(1-√2)²/(1-2)
即:x=0或x=2√2-3
1.x^2=2x
x²-2x=0
x(x-2)=0
x=0或x=2
2.(x+1)^2-(2x-3)^2=0
(x+1+2x-3)(x+1-2x+3)=0
(3x-2)(4-x)=0
x=3/2或x=4
3.x^2-6x+8=0
(x-2)(x-4)=0
x=2或x=4
4.(1+√2)x^2-(1-√2)x=0
x[(1+√2)x-(1-√2)]=0
x=0或x=(1-√2)/(1+√2)
x=0或x=(1-√2)²/(1-2)
即:x=0或x=2√2-3