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  • 23-05-2017
  • Mathematics
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simplify the radical expression by rationalizing the denominator 2/sqrt 42

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bcalle
bcalle bcalle
  • 23-05-2017
2/sqrt 42

Multiply both the numerator and denominator by sqrt 42 to clear the radical.
2/sqrt42 * sqrt42/sqrt42 =
2sqrt42/42 =
sqrt42 / 21
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