rationalise then answer 3/sqrt 18 + 5/ sqrt 72
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rationalise then answer 3/sqrt 18 + 5/ sqrt 72
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Answer:
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3/√18 + 5/√72
••> 3/3√2 + 5/6√2
••> (6 + 5)/6√2
••> 11/6√2
••> (11 × 6√2)/(6√2)(6√2)
••> 66√2/72
••> 11√2/12