If x = y + z then x3 – y3 – z3 is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 3xyz
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Understanding |
Application |
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We have: If (x + y + z) = 0, Then, x3 + y3 + z3 = 3xyz |
Given: x = y – z ⇒ (x – y – z) = 0 Then, x3 – y3 – z3 = 3xyz |