SOLUTION: When using the quadratic formula to solve a quadratic equation ax2 + bx + c = 0, the discriminant is b2 - 4ac. This discriminant can be positive, zero, or negative. (When the discr
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Question 85393: When using the quadratic formula to solve a quadratic equation ax2 + bx + c = 0, the discriminant is b2 - 4ac. This discriminant can be positive, zero, or negative. (When the discriminant is negative, then we have the square root of a negative number. This is called an imaginary number, sqrt(-1) = i. )
• Explain what the value of the discriminant means to the graph of y = ax2 + bx + c. Hint: Choose values of a, b and c to create a particular discriminant. Then, graph the corresponding equation.
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
Negative Discriminant:
= +- i
= +- 2i
Two Imaginary Roots
~
Positive Discriminant:
= +- 1
= +- 2
Two Real Roots
~
Discriminant of Zero:
= 0
One Real Root
~
I hope this helps....
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