ICSE Class 9 Answered
If a + B = 5 and a - B = √17 Then Value of Ab Should Be?
Asked by deodatta2002 | 14 Jun, 2020, 08:44: PM
Expert Answer
Given: a+b = 5 and a-b = sqrt{17}
We know that (a+b)2 - (a-b)2 = 4ab
52 - (sqrt{17})2 = 4ab
25 - 17 = 4ab
8 = 4ab
Hence, ab = 2
Answered by Renu Varma | 15 Jun, 2020, 10:04: AM
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