rationalise the denominator of 1 upon 7+ 3 root 2
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(7+3√2) upon 31
Step-by-step explanation:
(1 upon seven plus three root two) × ( seven plus three root two upon seven plus three root two )
= seven plus three root two upon seven square minus whole square of three root two ( by using identity (a+b) (a-b) = a²-b² )
= answer
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