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How do you solve $h^2 = 361$ ?

1 Answer

Jan 19, 2017

If $h^2=361$ , then $h=+-sqrt361$

Explanation:

I know that $sqrt400=20$ , and thus $19^2=(20-1)(20-1)$ $=$ $400-40+1=361$ as required............

Thus $h=+-19$ .

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