Question

A quadratic equation has exactly one real number solution. Which is the value of its discriminant?

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Answer 1

Answer: 0

The discriminant is the number under the square root of the quadratic formula

`x = (-b\pm√(b^2-4ac))/(2a)`

The discriminant formula is
`D = b^2-4ac`

If D = 0, then the whole square root portion is 0 meaning we end up with the solution
`x = -(b)/(2a)`