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# what are the different square roots of 49

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1936
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what are the different square roots of 49
Guest Jan 7, 2015

#4
+17721
+8

Go with Anonymous's answer because

not only is 7 an answer because (7)(7) = 49

but also -7 is an answer because (-7)(-7) = 49

(a negative number times a negative number has a positive anwer).

geno3141  Jan 7, 2015
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#1
+7188
+5

There is only one square root of 49........that would be 7

happy7  Jan 7, 2015
#2
+5

-7 and 7

Guest Jan 7, 2015
#3
+11847
+8

There is only one square root of 49 that's 7.its like

√7=49

or

7*7 = 49

rosala  Jan 7, 2015
#4
+17721
+8

Go with Anonymous's answer because

not only is 7 an answer because (7)(7) = 49

but also -7 is an answer because (-7)(-7) = 49

(a negative number times a negative number has a positive anwer).

geno3141  Jan 7, 2015
#5
+5

geno, you can never square root a number and get a negative

Guest Jan 7, 2015
#6
+92225
+5

ok there is a lot of confusion here so I will see if I can help to straighten it out for it is quite important.

Firstly  7*7=49     AND    (-7)*(-7)=49

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Now if the question is  $$\sqrt{49}$$   then the answer is 7     (Just 7 NOT -7)

This is because if the square root is written into the original question ONLY the positive answer counts.  That is a convention

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However,  if the question is

$$\\x^2=49 \qquad find\quad x \\\\ That is different because the square root is not written into the original question.\\\\ x=\pm\sqrt{47}=\pm7$$

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Please, if you want to ask questions do so because this is important.

Melody  Jan 8, 2015
#7
+85819
+5

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

So.... √49 = 7

But

x2 = 49

x = ±√49 = ± 7

CPhill  Jan 8, 2015

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