ICSE Class 9 Answered
If x+y=5/2 and xy=1, then find the value of x-y
Asked by shivshankarkumar61 | 21 Mar, 2019, 03:55: PM
Expert Answer
(x-y)2 = (x+y)2 - 4xy
(x-y)2 = (5/2)2 - 4(1) = 9/4
hence (x-y) = ± (3/2)
Answered by Thiyagarajan K | 21 Mar, 2019, 04:24: PM
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