CBSE Class 9 Answered
Using
suitable identity evaluate (42)3 - (18)3 - (24)3.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(42)3 - (18)3 - (24)3
Let x = 42, y = -18, z = -24
Now x + y + z = 42 - 18 - 24 = 0
Therefore,
x3 + y3 + z3 = 3xyz
= 3 (42) (-18) (-24)
= 54432
Answered by | 04 Jun, 2014, 03:23: PM
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