Question

If x² + 3x + 5 = 0 and a x2 + bx + c = 0 have a common root and a, b, c, E N, then minimum value of a+b+
cis equal to
(A)3
(B) 9
(C) 6
(D) 12
tell the answer fast ​

Answer 1

Answer:

your ans will be 9

Step-by-step explanation:

As the given quadratic equation has discriminant less than 0 ,that means it will have complex roots and complex roots always comes in conjugate pairs. Now as ax^2+bx+c has common roots with the given quadratic equation. This implies both the quadratic equations have same roots. ... Hence min a+b+c= 1+3+5=9 Ans.

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