Factoring: Part 19 - The "Let Statement" - The Power of Substitution - Part 4: Quadratic Formula, Checking Solutions, Ex. #3: Mathematics IIIb (116)

Table of Contents: Language of Mathematics, Math in Real Life

Law Enforcement Against Prohibition
Websites: www.CopsSayLegalizeDrugs.com and www.leap.cc

Additional Design & Illustration by Per Wessmark
www.wessmark.com