(x-1+2x+1)(x-1-2x-1)=0
3x(-x-2)=0
x=0,x=-2
(x-1)²-(2x+1)²=0要過(guò)程.
(x-1)²-(2x+1)²=0要過(guò)程.
數(shù)學(xué)人氣:229 ℃時(shí)間:2020-02-03 11:53:49
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