Answer:
Step-by-step explanation:
We have the equation:
Where <em>a </em>= -3, <em>b</em> = -6, and <em>c</em> = <em>k.</em>
And we want to determine values of <em>k</em> such that the equation will have real, unequal roots.
In order for a quadratic equation to have real, unequal roots, the discriminant must be a real number greater than 0. Therefore:
Substitute:
Simplify:
Solve for <em>k: </em>
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So, for all <em>k</em> greater than -3, our quadratic equation will have two real, unequal roots.
Notes:
If <em>k </em>is equal to -3, then we have two equal roots.
And if <em>k</em> is less than -3, then we have two complex roots.