What is a square root?

Question

parthkohli · Answer

Square root is the inverse/opposite of a square of a number.

parthkohli · Answer

$\Large \color{MidnightBlue}{\Rightarrow x^2 }$
This is x-squared.


$\Large \color{MidnightBlue}{\Rightarrow \sqrt{x} \text{ or } x^{1 \over 2} }$
This is the square root.

apoorvk · Answer

okay very well. square root of a no. is that no which multiplied by itself gives the original no. complicated?

if i have a no. 'n' suppose, then 'a' is sqrt of 'n' is a^2 = n

for eg, sqrt of 4 is 2. because 2^2 = 4.
also, '-2' is a sqrt of 4  because (-2)62, that (-2 * -2) is also 4.


helps?

apoorvk · Answer

**if a^2 = n

anonymous · Answer

Yes so much! Thank you both of you!

parthkohli · Answer

As doubling a number is the opposite of making the number half, the same happens with exponents.

apoorvk · Answer

**(-2)'^'6 - sorry for the typos, and welcome.

apoorvk · Answer

Parth has stated a very good analogy between square roots and multiplication.