What is the square root of 256?

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

59
Dec 18, 2015

#sqrt(256)=16#

at least that's the positive square root

#-16# is also a square root of 256.

#16^2 = (-16)^2 = 256#

By definition, the principal square root of a number is the positive square root. The term "the square root" is commonly used to refer to the principal (positive) root though there are usually two roots.

#sqrt(x^2)=|x|#

Was this helpful? Let the contributor know!
1500