## View Poll Results: SQUARE ROOT OF 4 ?

Voters
7. You may not vote on this poll
• 2

2 28.57%
• + OR - 2

3 42.86%
• DEPENDS ON SITUATION

2 28.57%

1. ajay23888
Join Date
Nov 2011
Posts
1

# Can you answer a Maths question listed below with explanation?

SQUARE ROOT OF 4 ?
a. 2
b.+ OR - 2
c. IT DEPENDS ON SITUATION  Reply With Quote

2. Rahul k
Join Date
May 2011
Location
Uttranchal,Rishikesh
Posts
1,943

## Re: Can you answer a Maths question listed below with explanation?

But According to me, It depends whether you define "square root of 4" as "the positive number whose square is 4" or "any number whose square is 4".

I think that in the question "Find the square root of 4", the first definition is implicit, otherwise you should have been asked "Find all square roots of 4".

Calculation : You can Calculate the Square Roots by Both the Ways :

√ 4 = √ (2 * 2) = 2

OR

√ (-2 * -2) = 2

Then the answer is 2. The surd symbol, applied to a non-negative real number x, always returns the non-negative real number y that satisfies y square = x.  Reply With Quote

3. snehak
Join Date
Jun 2011
Posts
551

## Re: Can you answer a Maths question listed below with explanation?

But According to me, It depends whether you define "square root of 4" as "the positive number whose square is 4" or "any number whose square is 4".

I think that in the question "Find the square root of 4", the first definition is implicit, otherwise you should have been asked "Find all square roots of 4".

Calculation : You can Calculate the Square Roots by Both the Ways :

√ 4 = √ (2 * 2) = 2

OR

√ (-2 * -2) = 2

Then the answer is 2. The surd symbol, applied to a non-negative real number x, always returns the non-negative real number y that satisfies y square = x.  Reply With Quote