Question

Rationalize the denominator of 1 up on 8+5 under root 2

Answer 1

Solution:

1/(8+5√2)

= (8-5√2)/[(8+5√2)(8-5√2)]

= (8-5√2)/[8²-(5√2)²]

= (8-5√2)/(64-50)

= (8-5√2)/14

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Answer 2

Hey !

Refer the below attachment !

Thanks !