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

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deepaksoniGuru

Asked: March 19, 20212021-03-19T11:10:29+05:30 2021-03-19T11:10:29+05:30In: ICSE

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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AAREKH · Answer 1 · 2021-03-20T07:24:56+05:30

AAREKH Guru

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.