Post-UTME Mathematics 2013 Objective — Question 61
Question 61 of 100 from the Post-UTME Screening (Post-UTME) Mathematics 2013 Objective paper, with the correct answer and a full explanation.
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If α and β are the roots of the equation 2x²-5x+6=0, find α²+β²
- A. 4
- B. 3
- C. -5/2
- D. ¼Correct
Explanation
α+β=5/2, αβ=3. α²+β²=(α+β)²-2αβ=25/4-6=1/4.
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