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| 1. |
Rationalise the denominator 4/√7-√5 |
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Answer» D 7
− 3
7
+ 3
4
The CONJUGATE of 7
+ 3
is 7
− 3
= 7
+ 3
4
× 7
− 3
7
− 3
= 7−3 4( 7
− 3
)
= 7
− 3 |
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