rationalise 7+3under root 2 upon 7-3under root 2
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=(7+3√2)/(7-3√2)
=(7+3√2)/(7-3√2)X(7+3√2)/(7+3√2)
=(7+3√2)²/(7)²-(3√2)²
=(49+18+42√2)/(49)-(18)
=(67+42√2)/(31)
SAMAJ AAYA.
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