Respuesta :

irspow
If a quadratic has roots of a and b it has factors of (x-a)(x-b).  In this case we have:

(x-8)(x+5) so if we expand by multiplication we have:

x^2-3x-40

The quadratic equation that has roots x=8 and x=-5 is  x^2-3x-40.

The quadratic equation has roots x=8 and x=-5.

What are the roots of a and b?

A quadratic equation has roots of a and b

It has factors of (x-a)(x-b).

In this case, we have

(x-8)(x+5)

So, if we expand by multiplication.

We have  x^2-3x-40.

Option B is correct.

To learn more about the roots visit:

https://brainly.com/question/2833285

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