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MATHEMATICS

JAMB 2006 - Question 38

Mathematics 2006 JAMB Past Questions - Question 38: Find the roots of x³ -2X² - 5X + 6 = 0

Choose the most appropriate option for the gap .

Find the roots of x³ -2X² - 5X + 6 = 0

A: 1,2,-3

B: -1,-2,3

C: -1,2,-3

D: 1,-2,3

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Correct Answer

Explanation

The roots x³ -2X² - 5X + 6 = 0. By trial method ± 1,± 2,± 3,– ̶ –.x =1 → (x – ); x = -2 → (x + 2);x = 3 → (x ̶ 3)