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Rationalise the Denominators of : 3/Sqrt5 + Sqrt2 - Mathematics

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प्रश्न

Rationalise the denominators of : `3/[ sqrt5 + sqrt2 ]`

योग

उत्तर

`3/[ sqrt5 + sqrt2 ] xx ((sqrt5 - sqrt2)/(sqrt5 - sqrt2))`

= `[3 (sqrt5 - sqrt2)]/[ (sqrt5)^2 - (sqrt2)^2 ]`

= `[3 (sqrt5 - sqrt2)]/[ 5 - 2]`

= `sqrt5 - sqrt2`

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Simplifying an Expression by Rationalization of the Denominator
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Rational and Irrational Numbers - Exercise 1 (C) [पृष्ठ २१]

APPEARS IN

सेलिना Concise Mathematics [English] Class 9 ICSE
अध्याय 1 Rational and Irrational Numbers
Exercise 1 (C) | Q 3.4 | पृष्ठ २१
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