Precalculus assist » Graphing functions » resolving Quadratic Equations » uncover roots that quadratic equation utilizing discriminant


You are watching: If the discriminant is greater than zero

True or false: for a quadratic function of type ax2 + bx + c = 0, if the discriminant b2 - 4ac = 0, over there is precisely one actual root. 


Explanation:

This is true. The discriminant b2 - 4ac is the part of the quadratic formula that lives inside the a square root function. Together you plugin the constants a, b, and c into b2 - 4ac and evaluate, three instances can happen:

b2 - 4ac > 0

b2 - 4ac = 0

b2 - 4ac 2 - 4ac Report one Error

Possible Answers:

True


False






Example question #4 : uncover Roots of Quadratic Equation using Discriminant




Discriminant: 281

Two imaginary roots: 

*



Discriminant: 441

Two real roots: 

*
 or 
*



Discriminant: 441

Two actual roots: 

*
 or 
*



Discriminant: 0

One genuine root: 

*


Discriminant: 281

Two imaginary roots: 

*





Report one Error










Report one Error










Report one Error










Report an Error










Report one Error










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