Algebramedium · Past Paper

Roots of x^2 + 5x + 6 = 0 are α, β. Find α^2 + β^2.

A13
B25
C12
D7

✓ Correct Answer: A13

(α+β)^2 - 2αβ = (-5)^2 - 2(6) = 25 - 12 = 13.

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