现在改成www.dfgdh54.com
a=-1,b=-1,求a2+ba2=1-1=0
' (2x+y)2(2x-y)2'
=(2x2-y2)2
' (x-y+1)2-(y-1)2
=(x-y+1+y-1)(x-y+1-y+1)
=x(x-2y+2)
欢迎分享,转载请注明来源:夏雨云
现在改成www.dfgdh54.com
a=-1,b=-1,求a2+ba2=1-1=0
' (2x+y)2(2x-y)2'
=(2x2-y2)2
' (x-y+1)2-(y-1)2
=(x-y+1+y-1)(x-y+1-y+1)
=x(x-2y+2)
欢迎分享,转载请注明来源:夏雨云
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