2x²+5xy+2y²+3x+3y-9 6x²+13xy+6y²+5x+5y+1

kkk0070072022-10-04 11:39:541条回答

2x²+5xy+2y²+3x+3y-9 6x²+13xy+6y²+5x+5y+1

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duoduo0626 共回答了23个问题 | 采纳率95.7%: 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); 1年前

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