已知6x^2-7xy-3y^2+14x+y+a=(2x-3y+b)(3x+y+1),则a=?,b=?

已知:6x²-7xy-3y²+14x+y+a=(2x-3y+b)(3x+y+1)求a,b的值 已知：A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B 已知6x^2-7xy-3y^2+14x+y+a=(2x-3y+b)(3x+y+c),则…… x²（x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3 已知3x+2y=a,2x+3y=b,则(x+y)(x-y)=? A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y,若x= 设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若x 设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y.若x 已知A=2x^2-4xy+6y^2+3x-y,B=x^2-2xy+3y^2-2x+y,如果A-2B=3a,并且|x-a| 已知A=x^3+3x^2y-5xy^2+6y^3-1,B=y^3+2xy^2+x^2y-2x^3+2,C=x^3-4x^ 已知集合A={（x,y)| (y-3)/ (x-1)=2,x,y∈R},B={（x,y)| 4x+ay=16,x,y∈ 1.已知集合A=｛（x,y)|y=2x+1｝,B=｛(x,y)|y=x+3｝,a∈A,b∈B,求a