The function f(x) = ax² + bx + c doesn't have any roots. Prove that a(2a+3b+6c) > 0

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.3: Algebraic Expressions
Problem 40E
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Clarification: 
1. f doesn’t have REAL roots
2. f is a quadratic, so a≠0

 

The function f(x) = ax² + bx + c
doesn't have any roots. Prove that
a(2a+3b+6c) > 0
Transcribed Image Text:The function f(x) = ax² + bx + c doesn't have any roots. Prove that a(2a+3b+6c) > 0
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