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Mathematics
Mathematics
Problem
The expression
1
3
+
2
\dfrac{1}{3+\sqrt{2}}
3
+
2
1
is rationalised. Which of the following is the correct simplified result? a)
3
+
2
7
\dfrac{3+\sqrt{2}}{7}
7
3
+
2
b)
3
−
2
7
\dfrac{3-\sqrt{2}}{7}
7
3
−
2
c)
3
−
2
5
\dfrac{3-\sqrt{2}}{5}
5
3
−
2
d)
3
−
2
11
\dfrac{3-\sqrt{2}}{11}
11
3
−
2
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