Question

if x=3, y=2, z=1, find the value of x3 + y3 + z3 - xyz​

Answer 1

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

3^3+2^3+1^3-3×2×1

27+8+1-6

34-6= 28

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Answer 2

Answer:

30

refer to the attachment