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Question

Factorize: a7+ab6

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Solution

Consider the given polynomial,a7+ab6

a7+ab6=a(a6b6)=a[(a3)2(b3)2]

=a[(a3b3)(a3+b3)]=a[(ab)(a2+b2+ab)(a+b)(a2+b2ab)]

=a(ab)(a2+b2+ab)(a+b)(a2+b2ab)

This is the required factor .


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