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    Another way of rationalising denominator

    Module 2 Day 2 Challenge Part 4
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    • RZ923
      RZ923 M0★ M2★ M3★ M4 M5 last edited by

      I like to rationalise denominators this way:
      There’s a \( \sqrt{2}\) in the denominator, so to get rid of that, we need a \( \sqrt{2}\) in the numerator.
      Luckily, \(10\) is made of \( \sqrt{2} \times 5 \sqrt{2}\).
      Cancellong out the two \( \sqrt{2}\)‘s in the numerator and the denominator, we get \(5 \sqrt{2}\).
      🙂

      amusingmarmoset 1 Reply Last reply Reply Quote 4
      • amusingmarmoset
        amusingmarmoset M0★ M1★ M2 @RZ923 last edited by

        @rz923 That's a smart way. 👍

        RZ923 1 Reply Last reply Reply Quote 6
        • RZ923
          RZ923 M0★ M2★ M3★ M4 M5 @amusingmarmoset last edited by

          @amusingmarmoset
          Thx 🙂

          1 Reply Last reply Reply Quote 3
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