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Learn about the Power Property of Equality in solving equations, avoiding extraneous solutions. Make zero product property work for you to find the correct solutions.
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Solving an equation, such as requires a new property………… Power Property of Equality: If a=b, then an=bn. But the new equation may have extraneous solutions
You have to get the square root by itself before you can square it. NO SOLUTION A square root can never equal a negative #
Now we have to factor and use the zero product property X=7 is the only solution. X=1 was extraneous.