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Earn +20 ptsQ: What is true of the discriminant?
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What is true about a quadratic if the discriminant is negative?
There are two complex solutions.
What is true of an equation if its discriminant is zero?
it has one real solution
If the discriminant of an equation is zero is true of the equation?
That its roots (solutions) are coincident.
What is true of the discriminant when the two real number solutions to a quadratic equation are rational numbers?
The discriminant must be a perfect square or a square of a rational number.
What has no true roots?
An equation with a discriminant that is less than zero. Note that in getting the discriminant, use the general form: ax²+bx+c=0 D=b²-4ac
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