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Question
If m = `1/[ 3 - 2sqrt2 ] and n = 1/[ 3 + 2sqrt2 ],` find mn
Sum
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Solution
mn = ( 3 + 2√2 )( 3 - 2√2 )
= (3)2 - (2√2)2
= 9 - 8
= 1
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Rationalisation of Surds
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