wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

a^2-4a-1=0 and a is not equal to 0,

find

  1. a-1/a
  2. a=1/a
  3. a^2-1/a^2

Open in App
Solution

ia2-4a-1=0aa-4=1a-4=1aa-1a=4iia+1a2=a-1a2+4 =42+4 =16+4 =20a+1a=20a+1a=25iiia2-1a2=a+1aa-1a=4×25=85a2-1a2=85

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
x^2 - y^2
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon