(Section 0.11: Solving Equations) 0.11.9 PART E: SOLVING RADICAL EQUATIONSWe often solve a radical equationby isolatingradicals on one or both sides of the equation and then raisingboth sides to the appropriate positive integer power. WARNING 12:If we raise both sides of an equation to an evenpower at anystep, we must checkour tentative solutions at the end and rejectextraneous solutionsthat do not check out. (Raising to an oddpower does notrequire such a check.) For example, if we squareboth sides of x=2, we obtain x2=4, which has 2 and ±2as solutions. However, ±2is an extraneous solutionthat must be
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