14-03-2019
Mathematics

contestada

The square root of the sum of a number is 4 is 5. Find the number. What is it?

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tramserran tramserran

14-03-2019

Answer: 21

Step-by-step explanation:

[tex]\sqrt{n+4}=5\\\\(\sqrt{n+4})^2=(5)^2\\\\n+4=25\\.\underline{\ \ -4\ \ -4}\\\boxed{n\quad \ =\ 21}[/tex]

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