Gb—,D& Q "_b 0 – InterviewSolution

1.

Gb—,D& Q "_b 0

Answer»

a^4 - b^4/a^2 - ab

= (a^2 - b^2)(a^2 + b^2)/ a(a - b)

= (a - b)(a + b)(a^2 + b^2)/ a(a - b)

= (a + b)(a^2 + b^2)/a

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