CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The complete set of values of k, for which the quadratic equation x2kx+k+2=0 has equal roots, consists of


A

2+2

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

2¯¯¯¯+12

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

212

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

212

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

The correct option is B

2¯¯¯¯+12


Equal roots =0
k24(k+2)=0
k24k8=0

k=4±16+4(8)2
k=4±482
k=4±2122
k=2±12


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Nature and Location of Roots
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon