4.分解因式:
(a3+b3+c3)(a+b+c)2−a(a+b)2(a+c)2(a^3+b^3+c^3)(a + b + c)^2-a(a+b)^2(a+c)^2(a3+b3+c3)(a+b+c)2−a(a+b)2(a+c)2
5.分解因式:
(x+p)4+(y−p)4+(x+y)4(x+p)^4+(y-p)^4+(x+y)^4(x+p)4+(y−p)4+(x+y)4
6.分解因式:
(a+b+c)3−a3−b3−c3(a+b+c)^3-a^3-b^3-c^3(a+b+c)3−a3−b3−c3
7.分解因式:
(ab+bc+ca)(a+b+c)−abc(ab+bc+ca)(a+b+c)-abc(ab+bc+ca)(a+b+c)−abc
8.分解因式:
x4(x+y)4+y4x^4(x+y)^4+y^4x4(x+y)4+y4