Ratio & Proportion Exercise 7.2 Q21(new) Class X ICSE | IIT If a, b, c are in continued proportion

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If a, b, c are in continued proportion, prove that:
pa2+qab+rb2/pb2+qbc+rc2 = ac

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Sir there are many new ques added in new book for icse 2020-21

KavitadpsSaini
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Wrong solution
a = bk hai aur aap a = CK likh rhe ho.

Kisi bhi Tarah se answer laa Dene se solution Sahi nhi ho jata hai

Wrong method use Kar ke sabko burbak bna rhe ho YouTube me

ShivamKumar-lbbu