Solution 5.2:1b
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(New page: Squaring both sides of an equation can introduce more (spurious) solutions. The equation to the right could have solutions that the equation to the left is lacking. You should use the <mat...)
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Squaring both sides of an equation can introduce more (spurious) solutions. The equation to the right could have solutions that the equation to the left is lacking. You should use the \displaystyle \Rightarrow arrow to indicate this.