Question

Write the lowest rationalizing factor of i) √5-3 ​

Answer 1

Answer:

See √5-3

(√5-3)(√5+3)

40 85

According to formula (a−b)(a+b)=a²-b²

so (√5)²-(3)²

Now here, Under root 5 will be cancelled with the square outside the bracket.

and

3 will be sqaured l.e 9

5-9

-4

This is an answer of simplification BUT the rationalising factor is √5+3

Hope it helps you !!