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ICSE Class 9 Answered

a-b=3 and ab=40 find a+b

 

Asked by pushti.pancholi | 24 Apr, 2022, 02:00: PM
Expert Answer
Given: a-b = 3 and ab = 40
open parentheses a plus b close parentheses squared equals open parentheses a minus b close parentheses squared plus 4 a b
space space space space space space space space space space space space space equals 3 squared space plus space 4 cross times 40
space space space space space space space space space space space space space equals space 9 space plus thin space 160
space space space space space space space space space space space space space equals space 169
rightwards double arrow a plus b equals 13
Answered by Renu Varma | 25 Apr, 2022, 03:00: PM

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