CBSE Class 9 Answered
solve please
Asked by iamsimanta123 | 09 Jun, 2022, 07:30: AM
Expert Answer
(x + y + z) [ (x - y)2 + (y - z)2 + (z - x)2]
(x + y + z) (x2 + y2 - 2xy + y2 + z2 - 2yz + z2 + x2 - 2xz)
= (x + y + z) (2x2 + 2y2 + 2z2 - 2xy - 2yz - 2xz)
= 2 (x + y + z) (x2 + y2 + z2 - xy - yz - xz)
= (x + y + z) (x2 + y2 + z2 - xy - yz - xz)
= x3 + y3 + z3 - 3xyz = LHS.
Answered by Renu Varma | 10 Jun, 2022, 11:06: AM
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