Question

Rationalise the denominators of the following
question 1) 13/√5
2) 6+√5/6-√5
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Answer 1

the above picture gives a brief explanation to the given question

thank you

Answer 2

Answer:

To rationalize a denominator with single value, what you have to do it is multiply both numerator and denominator with the number itself.

so here, multiply with 5

1)

= (13 x √5) ÷ √5 x √5

= 13√5 ÷ 5

= 13√5/5

2)

here multiply with additive inverse, = (6+√5)

(6+√5)(6+√5) / (6-√5)(6+√5)

=(36 + 5) / (36-5)

= 41/31

Hope it helps,

Byeeee