JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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Application +4 | -1

If roots of the equation

{x^3} - 12\;{x^2} + 39\;x - 28 = 0

are in A.P., then their common difference will be

View answer and explanation

Correct option: C

\pm 3

Option C (

\pm 3

) is correct because substituting the roots in A.P. into the cubic equation allows us to solve for the common difference.

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\frac{3}{4}