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What number would you add to the equation below to complete the square?

What number would you add to the equation below to complete the square?-example-1
User Fedeisas
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Simplify the expression to obtain the completion of square.


\begin{gathered} x^2+16x=0 \\ x^2+2\cdot8\cdot x+(8)^2=0+(8)^2 \\ x^2+2\cdot8\cdot x+64=64 \end{gathered}

So 64 is added on both side of equation to obtain complete square.

Answer: 64.

User Marcos Dimitrio
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