upteto17 q118

0. If x=2, y=1, z=-3, then x³ + y³ = z³ - 3xyz equals

Answer
Comment
Array

Option : D
Explanation : (D) Here,
x + y + z = 2 + 1 - 3 = 0
∴ x³ + y³ + z³ - 3xyz
= ( x + y + z)(x³ + y³ + z³ - xy - yz -zx)
=0

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