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

If α,β are the roots of x2(k+1)x+12(k2+k+1)=0, then show that α2+β2=k.

Open in App
Solution

α2+β2=(α+β)22αβ
=(k+1)22×12(k2+k+1)
since
α+β=ba=k+1;αβ=ca=12(k2+k+1)
=k2+2k+1k2k1
α2+β2=k

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Integration by Partial Fractions
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon