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Black Advanced Problems in Mathematics
Exam
Black Advanced Problems in Mathematics
Subject
Mathematics
Chapter
Quadratic Equation

Black Advanced Problems in Mathematics · Mathematics · Quadratic Equation

Let α, β be real roots of the quadratic equation x^2 + kx +...

Let α,β\alpha, \beta be real roots of the quadratic equation x2+kx+(k2+2k−4)=0x^2 + kx + (k^2+2k-4) = 0, then the minimum value of α2+β2\alpha^2 + \beta^2 is equal to :

Options

  1. A12
  2. B4/94/9
  3. C16/916/9
  4. D8/98/9.

Correct answer

D. 8/98/9.

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