Rationalising factor for the denominator of the expression 1/ 3+v5 is. (a) 3+√5. (b) √5+3. (c) √3+5. (d) 3-√5
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Answer:
Step-by-step explanation:
Here the denominator is
3
+
5
. So, the rationalizing factor is
3
−
5
3
+
5
1
=
3
+
5
1
×
3
−
5
3
−
5
=
(
3
)
2
−(
5
)
2
3
−
5
=
3−5
3
−
5
=
−2
3
−
5
=
2
5
−
3
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