CBSE Class 9 Answered
Prove
that:
2x3
+ 2y3 + 2z3 - 6xyz = (x + y + z) [(x - y)2 +
(y - z)2 + (z - x)2 hence evaluate 2(7)3 +
2(9)3 + 2(13)3 - 6(7) (9) (13).
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Now, put x = 7, y = 9 and z = 13, we get
Answered by | 04 Jun, 2014, 03:23: PM
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