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

If one root of the equation 2x2+ax+6=0 is 3, then find the value of a


A

-8

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

7

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

3

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

-5

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

The correct option is A

-8


If one root of the equation 2x2+ax+6=0 is 3,
then x=3 will satisfy the equation,

2(3)2+3a+6=0

18+3a+6=0

24+3a=0

a=8


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Roots of a Quadratic Equation
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon