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If (11a2 + 13b2) (11c2 – 13d2) = (11a2 – 13b2) (11c2 + 13d2), prove that a: b :: c: d.

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This is a basic question from ML aggarwal book of class 10th, chapter 7, ratio and proportion., ICSE board

In this question we have been given that (11a2 + 13b2) (11c2 – 13d2) = (11a2 – 13b2) (11c2 + 13d2), and. We have to prove that a: b :: c: d.

Question 6, 7.3

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  1. Solution:

    It is given that

    (11a2 + 13b2) (11c2 – 13d2) = (11a2 – 13b2) (11c2 + 13d2)

    We can write it as

    ML Aggarwal Solutions for Class 10 Chapter 7 Image 56

    Therefore, it is proved that a: b :: c: d.

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