(ay+bx)^3+(ax+by)^3-(a^3+b^3)(x^3+y^3)因式分解要有過程!

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(ay+bx)^3+(ax+by)^3-(a^3+b^3)(x^3+y^3)因式分解要有過程!(ay+bx)^3+(ax+by)^3-(a^3+b^3)(x^3+y^3)因式分解要有過程!(ay+bx

(ay+bx)^3+(ax+by)^3-(a^3+b^3)(x^3+y^3)因式分解要有過程!
(ay+bx)^3+(ax+by)^3-(a^3+b^3)(x^3+y^3)因式分解
要有過程!

(ay+bx)^3+(ax+by)^3-(a^3+b^3)(x^3+y^3)因式分解要有過程!
(ay+bx)^3+(ax+by)^3-(a^3+b^3)(x^3+y^3) =(ay+bx+ax+by)[(ay+bx)^2+(ax+by)^2-(ay+bx)(ax+by)]-(a+b)(a^2+b^2-ab)(x+y)(x^2+y^2-xy) =(a+b)(x+y)[(ay+bx)^2+(ax+by)^2-(ay+bx)(ax+by)]-(a+b)(x+y)[(a^2+b^2-ab)(x^2+y^2-xy)] =3abxy(a+b)(x+y)