Question

30 Without actually calculating the cubes, find the values of:
(1) (27)3 + (-17)3 + (-10)3
(ii) (-28)3 + (15)3 + (13)3.
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Answer 1

27^3 -17^3 - 10^3
27^3-27^3
0
-28^3+15^3+13^3
-28^3+28^3
0