ok over there is a the majority of confusion below soIwill check out if Ican assist to straighten it the end for that is quite 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 inquiry is $$sqrt49$$ then the answer is 7 (Just 7 NOT -7)
This is due to the fact that if the square root is written right into the initial question only the optimistic answer counts. That is a convention.
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However, if the inquiry is
$$\x^2=49 qquad findquad x \\ $That is different since the square root is no written right into the initial question.$\\ x=pmsqrt47=pm7$$
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Please, if you want to asking questions execute so because this is important.
Melody Jan 8, 2015
#7
+5
The convention is that we assume the positive root, unless we are addressing an equation...
So.... √49 = 7
But
x2 = 49
x = ±√49 = ± 7
CPhill Jan 8, 2015
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