CBSE Class 10 Answered
4. If p , q , r are in arithmetic progression, then prove that ( q + r ) 2 − p 2 , ( r + p ) 2 − q 2 , ( p + q ) 2 − r 2 are also in arithmetic progression.
Asked by mdadil812777 | 14 Mar, 2017, 06:20: PM
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Answered by | 15 Mar, 2017, 10:17: AM
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