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Without solving each equation, find the sum and product of the roots.$2 x^{2}-8=5 x$

$\operatorname{sum}=\frac{5}{2}$product $=-4$

Algebra

Chapter 5

QUADRATIC FUNCTIONS AND COMPLEX NUMBERS

Section 7

Sum and Product of the Roots of a Quadratic Equation

Equations and Inequalities

Quadratic Functions

Complex Numbers

Polynomials

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all right. We got a first changes to be in the form that we want. And so let's get rid. I think I have the highlighter up and I wanted the looks better. Let's get rid of the five X on the right side by subtracting five x from both sides of the equation. And so we have a two X squared minus five X minus eight equal to zero. Sorry about that. Anyway, we can see her, A, B and C values here. And so we need to find are some which is negative, be over a and so be is negative five. So a negative negative fot I've is a positive five are a values to meaning Our son is 5/2 r c value here is a negative eight and as I said earlier, a values to in negative eight divided by two is negative for start product is negative for and our son is 5/2

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