问题标题:
2x²+5xy+2y²+3x+3y-96x²+13xy+6y²+5x+5y+1
问题描述:

2x²+5xy+2y²+3x+3y-96x²+13xy+6y²+5x+5y+1

刘连臣回答:
  2x²+5xy+2y²+3x-3y-9   =(2x+y)(x+2y)+3(x-y)-9   =(2x+y-3)(x+2y+3)   6x²+13xy+6y²+5x+5y+1   =(2x+3y)(3x+2y)+5(x+y)+1   =(2x+3y+1)(3x+2y+1)
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