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Home/Practice questions/General Aptitude Test

General Aptitude TestQuantitative ReasoningAlgebra

What is the value of (a+b)3 - a3 + b3 ?

What is the value of (a+b)³ - a³ + b³ ?

Answer & explanation+

Correct answer: option 2

(a+b)³ - a³ + b³

= a³ + b³+ 3ab(a+b) - a³ + b³

= 3ab(a + b) +2b³

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