分解因式4m^3+4m^2n-9mn^2-9n^3 ax^2=ax-bx-b -3x^2-2x^2y^2+6xy (2x^3-4)+(x^2-8x) 4x^2-y^2-4x-2y分解因式(1)4m^3+4m^2n-9mn^2-9n^3 (2) ax^2+ax-bx-b (3)x^3y-3x^2-2x^2y^2+6xy (4)(2x^3-4)+(x^2-8x) (5)4x^2-y^2-4x-2y

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分解因式4m^3+4m^2n-9mn^2-9n^3ax^2=ax-bx-b-3x^2-2x^2y^2+6xy(2x^3-4)+(x^2-8x)4x^2-y^2-4x-2y分解因式(1)4m^3+4m^

分解因式4m^3+4m^2n-9mn^2-9n^3 ax^2=ax-bx-b -3x^2-2x^2y^2+6xy (2x^3-4)+(x^2-8x) 4x^2-y^2-4x-2y分解因式(1)4m^3+4m^2n-9mn^2-9n^3 (2) ax^2+ax-bx-b (3)x^3y-3x^2-2x^2y^2+6xy (4)(2x^3-4)+(x^2-8x) (5)4x^2-y^2-4x-2y
分解因式4m^3+4m^2n-9mn^2-9n^3 ax^2=ax-bx-b -3x^2-2x^2y^2+6xy (2x^3-4)+(x^2-8x) 4x^2-y^2-4x-2y
分解因式(1)4m^3+4m^2n-9mn^2-9n^3 (2) ax^2+ax-bx-b (3)x^3y-3x^2-2x^2y^2+6xy (4)(2x^3-4)+(x^2-8x) (5)4x^2-y^2-4x-2y

分解因式4m^3+4m^2n-9mn^2-9n^3 ax^2=ax-bx-b -3x^2-2x^2y^2+6xy (2x^3-4)+(x^2-8x) 4x^2-y^2-4x-2y分解因式(1)4m^3+4m^2n-9mn^2-9n^3 (2) ax^2+ax-bx-b (3)x^3y-3x^2-2x^2y^2+6xy (4)(2x^3-4)+(x^2-8x) (5)4x^2-y^2-4x-2y
(1)4m^3+4m^2n-9mn^2-9n^3 =4m^2(m+n)-9n^2(m+n)=(4m^2-9n^2)(m+n)
=(2m-3n)(2m+3m)(m+n)
(2) ax^2+ax-bx-b= ax^2-bx+ax-b=x(ax-b)+(ax-b)=(x+1)(ax-b)
(3)x^3y-3x^2-2x^2y^2+6xy =x^2(xy-3)-2xy(xy-3)=(x^2-2xy)(xy-3)
(4)(2x^3-4)+(x^2-8x)=2x^3+x^2-8x-4=x^2(2x+1)-4x(2x+1)=(x^2-4x)(2x+1)=x(x-4)(2x+1)
(5)4x^2-y^2-4x-2y=(2x-y)(2x+y)-2(2x+y)=(2x-y-2)(2x+y)

分解因式m^2/9-(mn)/3+n^2/4 4m^2+12mn+9n^2分解因式 2m(m-n)^2-4n(n-m)^3 （分解因式）-7m(m-n)^3+21mn(n-m)^2 (分解因式）快 m^2n^2/9+2mn^3/3+n^4 分解因式 4m^2-2mn-2n^2+4m-7n-3怎么分解因式分解因式：－4m^2n^3+12m^3n^2-2mn 分解因式m^2n(m-n)^2-4mn(n-m) 分解因式mn(m-n)-m(n-m)^2 m^2+2mn+n^2+4m-4n+4 分解因式. 分解因式；9m^2+6mn-3m-n+n^2 4m^3n-16mn^3分解因式 4m^3n-16mn^3 分解因式 2m^3n-8mn^3分解因式分解因式9(m+n)^2-4(m-n)^2 分解因式(m^2—4)(n^2—9)+24mn m^2-4mn+3n^2=要用配方方法分解因式 4m的2次方乘以n-16mn的3次方的分解因式分解因式-4m^2n+2mn^2-2mn