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

If a, b are the roots of the equation x2+x+1=0, then a2+b2=


A

1

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

2

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

-1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

3

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

-1


Given equation:x2+x+1=0Also, a and b are the roots of the given equationSum of the roots=a+b=coefficient of xcoefficientofx2=11=1Product of the roots ab=coefficient termcoefficientofx2=11=1(a+b)2=a2+b2+2ab12=a2+b2a2+b2=1


flag
Suggest Corrections
thumbs-up
14
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon