1. Indices and Surds
iGCSE (2021 Edition)
1.10 Rationalising the denominator
Interactive practice questions
Determine a conjugate for $5+\sqrt{5}$5+√5.
Easy
< 1min
Determine a conjugate for $6-\sqrt{v}$6−√v.
Easy
< 1min
Determine a conjugate for $\sqrt{6}+\sqrt{3}$√6+√3.
Easy
< 1min
Determine a conjugate for $\sqrt{n}-\sqrt{5}$√n−√5.
Easy
< 1min
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