#4**+8 **

Best Answer

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

#6**+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