(a3 – b3 ) ÷ (a – b) = ……………… A) a2 + ab + b2 B) a – InterviewSolution

1.

(a3 – b3 ) ÷ (a – b) = ……………… A) a2 + ab + b2 B) a – ab + b2 C) a2 – ab – b2 D) a – b2

Answer»

Correct option is (A) a² + ab + b²

\((a^3-b^3)\div(a-b)\) \(=\frac{a^3-b^3}{a-b}\)

\(=\frac{(a-b)(a^2+ab+b^2)}{a-b}\)

= \(a^2+ab+b^2\)

A) a² + ab + b²

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