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Using quadratic function concepts, it is found that the discriminant is zero, hence option A is correct.
A standard quadratic equation is modeled by:
[tex]y = ax^2 + bx + c[/tex]
The discriminant is:
[tex]\Delta = b^2 - 4ac[/tex]
The relation between the discriminant and the number of zeros(roots) is:
In this problem, the function has one root, at [tex]x = 5[/tex], hence, the discriminant is zero.
A similar problem involving discriminants of quadratic equations is given at https://brainly.com/question/19776811