6x^2-7xy -3y^2+14x+y+a=(2x-3y+b)(.x+y+1)
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6x^2-7xy -3y^2+14x+y+a=(2x-3y+b)(.x+y+1)
(2X-1612 + B)(3X + Y +1)
= 6X 2 7xy-3Y 2 +(2 +3 B)X +(B-3)Y + B
= 6的2 -7xy-3Y 2 +14 X + Y +一个
2 +3 = 14
B-3 = 1
一个= B
因此,B = 4,= 4
再问: 不对
= 6X 2 7xy-3Y 2 +(2 +3 B)X +(B-3)Y + B
= 6的2 -7xy-3Y 2 +14 X + Y +一个
2 +3 = 14
B-3 = 1
一个= B
因此,B = 4,= 4
再问: 不对
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