Question

Which are the roots of the equation x 3 - 12 x 2 + 39x - 28 = 0) if the roots are in arithmetic progression ?

• A. (1,4,7)
• B. (2, 2, 7)
• C. (2.4. 7)
• D. (1.2, 5)

Answer 1

Answer:

D. (1.2, 5)