I was doing some problems last night, and I came across this one and I am not sure how to get started.
If the polynomial does not have any (real*) roots, prove that has two (real*) roots.
*In full disclosure, the text did not include the word 'real' before the word 'roots'. Obviously, by the Fundamental Theorem of Algebra, both will have two roots.
I was thinking about arguing that equation A must have a discriminant that is negative ( ) and therefore Equation B will have a positive discriminant ( ). A quadratic with a positive discriminant has two real roots.
Is there a better / more clever way to solve this?