If x = 2 – p, then x3+ 6xp + p3 is equal to:
Show answer & explanation
Correct answer: B
Explanation
Correct Answer is option 2 i.e. 8
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Concept |
Understanding |
Application |
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(x + y)3 = x3 + 3xy (x + y) + y3 |
Given: x = 2 – p
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x = 2 – p (x + p) = 2 Taking cube: ⇒ x3 + 3xp (x + p) + p3 = 8 Put (x + p) = 2 ⇒ x3 + 6xp + p3 = 8 |