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When can you say that he discriminant don't have roots?

Updated: 8/21/2019
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If the discriminant b2-4ac of a quadratic equation is less than zero then it will have no roots

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Q: When can you say that he discriminant don't have roots?
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When can you say that the discriminant don't have root?

If the discriminant of a quadratic equation is less than zero then it will have no real roots


What are 3 outcomes for the discriminant?

If the discriminant of a quadratic equation is zero then it has equal roots. If the discriminant is greater than zero then there are two different roots. If the discriminant is less than zero then there are no real roots.


How does the discriminant affect the roots of a quadratic equation?

If the discriminant is negative, the roots will be two unreal complex conjugates. If the discriminate is positive the roots will be real.


What is a discriminant in a quadratic equation?

General form of a quadratic equation is: ax2+b+c = 0 The discriminant is: b2-4ac If the discriminant equals zero then there are two equal roots If the discriminant is greater than zero then there are two different roots If the discriminant is less than zero then there are no real roots


What are quadratic equations with real roots?

If the discriminant of the quadratic equation is zero then it will have 2 equal roots. If the discriminant of the quadratic equation is greater than zero then it will have 2 different roots. If the discriminant of the quadratic equation is less than zero then it will have no roots.


How many real roots exist if the discriminant of the eqation0?

If the discriminant of a quadratic equation is 0 then it has two equal real roots.


How many real roots exist if the discriminant of the equation plus 0?

If the discriminant of a quadratic equal is zero then it will have two equal roots.


What can the discriminant tell you about a quadratic equation?

It can tell you three things about the quadratic equation:- 1. That the equation has 2 equal roots when the discriminant is equal to zero. 2. That the equation has 2 distinctive roots when the discriminant is greater than zero. £. That the equation has no real roots when the discriminant is less than zero.


How to tell if there are no real roots?

The real roots of what, exactly? If you mean a square trinomial, then: If the discriminant is positive, the polynomial has two real roots. If the discriminant is zero, the polynomial has one (double) real root. If the discriminant is negative, the polynomial has two complex roots (and of course no real roots). The discriminant is the term under the square root in the quadratic equation, in other words, b2 - 4ac.


If the discriminant of an equation is 0?

If the discriminant of a quadratic equation is zero then it has two identical roots.


What is true about a quadratic equation when the discriminant of the equation is positive?

It will then have 2 different roots If the discriminant is zero than it will have have 2 equal roots


What is the discriminant test for factorability?

For a quadratic equation the discriminant is: b2-4ac If it's = 0 then the roots are equal If it's < 0 then there are no roots If it's > 0 then there are two different roots