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sydnikay Group Title

Part 1: Using complete sentences, explain what the discriminant is and what it tells you about the solutions of a quadratic equation. Part 2: Provide a unique example to back up your explanation. Please help me :)

  • 3 years ago
  • 3 years ago

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  1. SmoothMath Group Title
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    This is the kind of question you sort of have to do on your own, but if you have any questions about the discriminant, ask away.

    • 3 years ago
  2. jimmyrep Group Title
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    The general form of a quadratic equation is ax^2 + bx + c = 0 where a, b and c are numbers. There is a formula for the roots and that is( -b+- sqrt(b^2-4ac) / 2a The disvriminant is b^2-4ac. If discriminant is > 0 there are two real roots, if equal to 0 there are two equal real roots and if it is < 0 then the roots are imaginary.

    • 3 years ago
  3. jimmyrep Group Title
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    eg solve x^2 + 5x + 13 = 0 Discriminant = 5^2 - 4*1* 13 = -27 the sqrt of -27 is imaginary no real roots

    • 3 years ago
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