Rationalise: 4 root5/ 3 root7
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Answered by
1
Answer:
Step-by-step explanation:
(4 + \sqrt{5} ) \times ( \sqrt{3} - \sqrt{7} )(4+
5
)×(
3
−
7
)
4 \sqrt{3} + \sqrt{15} - 4 \sqrt{7} - \sqrt{35}4
3
+
15
−4
7
−
35
\begin{gathered}6.92+ 3.87 - 10.58 - 5.91 \\ = 10.79 - 16.49 \\ = - 5.7\end{gathered}
6.92+3.87−10.58−5.91
=10.79−16.49
=−5.7
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