English

Find the value of x, if |(2,3),(4,5)|=|(x,3),(2x,5)|.

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Question

Find the value of x, if `|(2,3),(4,5)|=|(x,3),(2x,5)|`.

Sum
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Solution

`|(2,3),(4,5)|=|(x,3),(2x,5)|`

⇒ 2 × 5 − 3 × 4 = x × 5 − 3 × 2x

⇒ 10 − 12 = 5x − 6x

⇒ −2 = −x

⇒ x = 2

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Chapter 4: Determinants - Exercise 4.1 [Page 109]

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NCERT Mathematics Part 1 and 2 [English] Class 12
Chapter 4 Determinants
Exercise 4.1 | Q 7.2 | Page 109
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