解方程：（x+0.25)²-(x-0.25)(x+0.25)=0.25

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解：（x+0.25)2-(x-0.25)(x+0.25)=0.25
(x+0.25)〔(x+0.25)-(x-0.25)〕＝0.25
（x+0.25）*0.5=0.25
x+0.25=0.5
x=0.25 用提公因式法解好

千问 | 2011-4-11 20:31:19 | 显示全部楼层

x=0.25解：x 2+2*0.25*x+ 0.252-（x 2+0.25*x-0.25*x-0.252）=0.25
x 2+0.5*x+0.252-x 2+0.252=0.25
0.5*x+2*0.252=0.25

千问 | 2011-4-11 20:31:19 | 显示全部楼层

（x+0.25)2-(x-0.25)(x+0.25)=0.25 （x+0.25) （x+0.25-x+0.25）=0.25
0.5 (x+0.25) = 0.25
x+0.25 =0.5
x=0.25

千问 | 2011-4-11 20:31:19 | 显示全部楼层

(x+0.25)-(x-0.25)(x+0.25)=(x+0.25)(x+0.25-x+0.25)=0.5(x+0.25)

千问 | 2011-4-11 20:31:19 | 显示全部楼层

（x+0.25)2-(x-0.25)(x+0.25)=0.25 x2+0.5x+1/16-x2+1/16=1/41/2x=1/4-1/81/2x=1/8x=1/4或x=0.25

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