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Question

Find the factors of a(b4c4)+b(c4a4)+c(a4b4).

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Solution

We can write above equation as
a(b4c4)b(b4c4+a4b4)+c(a4b4)
=a(b4c4)b(b4c4)b(a4b4)+c(a4b4)
=(b4c4)(ab)+(a4b4)(cb)
=(b2c2)(b2+c2)(ab)+(a2b2)(a2+b2)(cb)
=(bc)(b+c)(b2+c2)(ab)+(ab)(a+b)(a2+b2)(cb)
=(bc)(ab)((b+c)(b2+c2)(a+b)(a2+b2))
=(bc)(ab)(b3+bc2+cb2+c3a3ab2ba2b3)
=(bc)(ab)(bc(c+b)ab(a+b)+(ca)(c2+a2+ac))
=(bc)(ab)(b(c2+cba2ab)+(ca)(c2+a2+ac))
=(bc)(ab)(b(c2a2)+b2(ca))+(ca)(c2+a2+ac))
=(bc)(ab)(ca)(b(c+a)+b2+c2+a2+ac)
=(bc)(ab)(ca)(a2+b2+c2+ac+bc+ab)

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