Question

rationalise the denominator and simplify : 13+3√5/13-3√5 ​

Answer 1

Answer:

13+3√5/13-3√5

16√5/10√5

√5 are cancel out

16/10

divide by 2

8/5

8/5 is the answer

Step-by-step explanation:

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Answer 2

Answer:

13+3√5/13-3√5

= (13+3√5)(13+3√5)/(13-3√5)(13+3√5)

= (13+3√5)^2/ 13^2-3√5^2

= 13^2+2*13*3√5+3√5^2/169-9*5

= 169+78√5+9*5/169-45

= 169+45+78√5/124

= 214+78√5/124

= 2(102+39√5)/124

= 102+39√5/62