Question

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

Answer 1

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