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One of the roots is given. Find the other root.$x^{2}+15 x+c=0 ;-5$
$-10$
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
Missouri State University
Oregon State University
Harvey Mudd College
Idaho State University
Lectures
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he said the quadratic that we were given was X squared plus 15 x, uh, plus C. And we're told that one of the routes is my spy were asked to find the other route eso using the information that we were given. We know that 15 is the some off both of our roots, so we can put this as 15 equals minus five. And I'll just put the second room as, um are too eso also we have to do to find the other room is just south for our two. So to do that, we have our two equals 20 and that fine on that is the other route. So we have a roots is minus five and 20. So also you would have to do to find sea is just, um, multiply both routes since he represents the body. Uh oh. The route so minus five times 20 is minus 100. So we not only have our second route as 20 but we also have the value of C as my ass. 100
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