Question

Evaluate X³ + y³ + z³ -3xyz when x =-2, y = -1 and z = 3.​

Answer 1

Step-by-step explanation:

x^3+y^3+z^3-3xyz

(-2)^3+(-1)^3+3^3-3×(-2)(-1)(3)

(-8)+(-1)+27-3×6

-8-1+27-18

-9+27-18

18-18

=0

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