हिंदी

If m = and13-22andn=13+22, find mn - Mathematics

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प्रश्न

If m = `1/[ 3 - 2sqrt2 ] and n = 1/[ 3 + 2sqrt2 ],` find mn

योग
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उत्तर

mn = ( 3 + 2√2 )( 3 - 2√2 )

= (3)2 - (2√2)2

= 9 - 8

= 1

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Rationalisation of Surds
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Rational and Irrational Numbers - Exercise 1 (C) [पृष्ठ २२]

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सेलिना Concise Mathematics [English] Class 9 ICSE
अध्याय 1 Rational and Irrational Numbers
Exercise 1 (C) | Q 7.3 | पृष्ठ २२
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