CBSE Class 10 Answered
If (a.a + b.b)x.x - 2(ac+bd)x + (c.c + d.d) , has equal roots, show that ad=bc
Asked by P S Lakshmi | 09 Mar, 2015, 11:00: PM
Expert Answer
Answered by Prasenjit Paul | 10 Mar, 2015, 04:01: PM
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