show that the reciprocal of 3+2√2 is an irrational number
Answers
Answered by
125
Hope it helps ✌️✌️
Please mark as Brainliest
Please mark as Brainliest
Attachments:
Answered by
123
▪️Question : Show that reciprocal of 3 + 2√2 is an irrational.
_______________________
Given : Reciprocal of 3 + 2√2 i.e.,
To prove : Reciprocal of 3 + 2√2 is an irrational number.
Proof :
First of all, rationalise the denominator of the reciprocal of 3 + 2√2.
After rationalising its denominator, we get ( 3 - 2√2 ) as a result.
Now, let us assume that ( 3 - 2√2 ) is an irrational number. So, taking a rational number i.e., 3 and subtracting from it.
We have ;
[ 3 - 2√2 - 3 ]
⇒ - 2√2
As a result, we get ( - 2√2 ) which is an irrational number.
Hence, the reciprocal of ( 3 + 2√2) is an irrational number.
Similar questions
Music,
7 months ago
English,
7 months ago
Chemistry,
7 months ago
Computer Science,
1 year ago
English,
1 year ago