Question

1) Verify that xº + y2 + z3 –
(x + y + z)[(x - y)2 + (y - 3)2 + (z - x)]
2)If x + y + z = 0, show that x + y2 + z = 3xyz.
3)A Without actually calculating the cubes, find the value of each of the following:
(-12) + (7)3 +(5)
(28) + (-15) + (-13)3
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Answer 1

Answer:

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