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Expand: (7 – sqrt(3))^2 - Mathematics

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प्रश्न

Expand:

`(7 - sqrt(3))^2`

बेरीज
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उत्तर

We have, `(7 - sqrt(3))^2`

= `(7)^2 + (sqrt(3))^2 - 2 xx 7 xx sqrt(3)`  ...[Use (a – b)2 = a2 + b2 – 2ab]

= `49 + 3 - 14sqrt(3)`

= `52 - 14sqrt(3)`

Therefore, the required is `52 - 14sqrt(3)`.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Rational and Irrational Numbers - EXERCISE 1C [पृष्ठ १५]

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बी निर्मला शास्त्री Mathematics [English] Class 9 ICSE
पाठ 1 Rational and Irrational Numbers
EXERCISE 1C | Q 5. (ii) | पृष्ठ १५
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