ok there is a the majority of confusion here soIwill view if Ican help to straighten it the end for that is quite important.

You are watching: Whats the square root of 49

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


Now if the inquiry is $$\sqrt49$$ then the prize is 7 (Just 7 NOT -7)

This is due to the fact that if the square source is written right into the initial question just the positive answer counts. That is a convention.


However, if the concern is

$$\\x^2=49 \qquad find\quad x \\\\ $That is different since the square root is no written right into the initial question.$\\\\ x=\pm\sqrt47=\pm7$$


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

Melody Jan 8, 2015

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

So.... √49 = 7


x2 = 49

x = ±√49 = ± 7

CPhill Jan 8, 2015
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