ok there is a the majority of confusion below soIwill view if Ican assist to straighten it out for that is fairly important.

You are watching: What is the square root of 49

Firstly 7*7=49 and also (-7)*(-7)=49

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Now if the concern is $$\sqrt49$$ climate the prize is 7 (Just 7 NOT -7)

This is since if the square root is written into the initial question only the optimistic answer counts. That is a convention.

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However, if the concern is

$$\\x^2=49 \qquad find\quad x \\\\ $That is different because the square root is not written into the initial question.$\\\\ x=\pm\sqrt47=\pm7$$

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Please, if you desire to asking questions execute so since this is important.


Melody Jan 8, 2015
 #7
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+5

The convention is that we assume the positive root, unless we are fixing an equation...

So.... √49 = 7

But

x2 = 49

x = ±√49 = ± 7


CPhill Jan 8, 2015
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