Question

write the rationalising factor of root 5 minus 2

Answer 1

The rationalising factor of √5 - 2 is √5 + 2.
Therefore,

$(\sqrt{5} - 2) * (\sqrt{5} + 2) \\ = (\sqrt{5})^{2} - (2)^{2} \\ = 5 - 4 \\ = 1$
 

Answer 2

Answer:

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