wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

If a and b are roots of the equation x2 + ax + b = 0, then a + b =

(a) 1
(b) 2
(c) −2
(d) −1

Open in App
Solution

The given quadric equation is , and their roots are a and b

Then find the value of

Let be two roots of given equation

And,

Then, as we know that sum of the roots

And the product of the roots

Putting the value of a in above

Therefore, the value of

Thus, the correct answer is


flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Nature of Roots
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon