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35 votes
35 votes
What are the solutions to the equation (x − 21)2 = 25?x= x=

User Kitinz
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1 Answer

23 votes
23 votes

SOLUTION:

Case: Quadratics equation

Method:


\begin{gathered} (x-21)^2=25 \\ TakeSquarerootsOfBothSides \\ x-21=√(25) \\ x-21=\pm5 \\ x=21\pm5 \\ x=21+5\text{ }or\text{ }x=21-5 \\ x=26\text{ }or\text{ }x=16 \end{gathered}

Final answer:

x= 16

x= 26

User Dayday
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