Question

If the roots of the equation ax² + bx + c = 0, are of the form α/α -1 and α +1/α  then the value of (a + b + c)² is :

(a) 2b² − ac 

(b) 4b² − 2ac 

(c) b² − 2ac 

(d) b² − 4ac

Answer 1

Correct option (d) b² − 4ac

Explanation:

Putting value of α from (2) in equation (1), we get