Matt has a full jar of marbles he gave Kayla 3/4 of marbles then Kayla returned 1/3 of a jars worth of marbles to the jar. How m
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For this case we have that by definition, the discriminant of a quadratic expression is given by:
If the discriminant is less than zero then the expression has two different complex roots.
In this case we have the following expression:
So we have to:
The discriminant is given by:
Then, if we want two complex roots it must be fulfilled that:
Thus, the expression has two complex roots for all values greater than 4.
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