Multiple choice

The discriminant of the quadratic equation $5 x ^ { 2 } - 6 x + 1 = 0$ is

  1. 16
  2. $\sqrt { 56 }$

  3. 4

  4. 56
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A Correct answer
Explanation

Discriminant D = b^2 - 4ac = (-6)^2 - 4(5)(1) = 36 - 20 = 16.

AI explanation

The discriminant of a quadratic equation is found using the formula D = b^2 - 4ac. Substituting the values from the equation 5x^2 - 6x + 1 = 0 gives D = (-6)^2 - 4(5)(1). This calculates to 36 - 20, so the discriminant is 16.

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