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CBSE Class 9 Answered

If left parenthesis a plus b right parenthesis squared=2 a squared+2 b squared, show that a=b
Asked by Divyaa | 29 Oct, 2015, 07:35: PM
answered-by-expert Expert Answer
G i v e n space t h a t space open parentheses a plus b close parentheses squared equals 2 a squared plus 2 b squared rightwards double arrow a squared plus b squared plus 2 a b equals 2 a squared plus 2 b squared rightwards double arrow 2 a squared plus 2 b squared minus a squared minus b squared minus 2 a b equals 0 rightwards double arrow a squared plus b squared minus 2 a b equals 0 rightwards double arrow open parentheses a minus b close parentheses squared equals 0 rightwards double arrow open parentheses a minus b close parentheses equals 0 rightwards double arrow a equals b
Answered by Vimala Ramamurthy | 29 Oct, 2015, 08:29: PM

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