Determine whether each polynomial is a perfect square trinomial.x 2 - 9

Chapter6TextbookOutline 6-1Newton’sLawsinamessyWorld Ø Thisbriefsectiontalkedabouttheforcesthatwillaltertheresults ofNewton’sLawsintherealworld 6-2FrictionandtheNormalForceRevisited Ø Friction:forceactingontwosurfaceswhentheyarerubbed together;canbereducedbutneverfullyeliminated o Withoutfriction,wewouldnotbeabletowalkonthe...