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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

The quadratic expression ax^2 + bx + c > 0 x ∈ R , then:

The quadratic expression ax2+bx+c>0∀x∈Rax^2 + bx + c > 0 \forall x \in R, then:

Options

  1. A13a−5b+2c>013a - 5b + 2c > 0
  2. B13a−b+2c>013a - b + 2c > 0
  3. Cc>0,D<0c > 0, D < 0
  4. Da+c>b,D<0a + c > b, D < 0 (where DD is discriminant).

Correct answer

A. 13a−5b+2c>013a - 5b + 2c > 0

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