How do you find the square root in maths? and what are prime numbers?

I'm not good at maths. I just wanna know what prime numbers are and what square roots are in mathematics because I'm gonna have a maths test soon.How do you find the square root in maths? and what are prime numbers?
prime numbers are those numbers which have 1 and itself as its multiple.


for example: 1, 3, 5, 7, 11 etc


2 = 1*2


3 = 1*3


5 = 1*5


you can't find square root of every number because every number is not a perfect square. For example 2*2 = 4 is a perfect square, but numbers like 2, 3,5 etc are not perfect squares, hence they don't have perfectly defined square root. For example root of 3 = 1.732050808..................





But we can find square root of perfect square numbers by prime factorization. Like 36 = 2*2*3*3.


We should then take the numbers present in pairs, and then multiply so as to get their roots. So root of 36 = 2*3 = 6.





To find square root of non perfect square numbers, use a scientific calculator.How do you find the square root in maths? and what are prime numbers?
In mathematics, a square root of a number x is a number r such that r2 = x, or in words, a number r whose square (the result of multiplying the number by itself) is x. Every non-negative real number x has a unique non-negative square root, called the principal square root, which is denoted with a radical symbol as \sqrt{x}, or, using exponent notation, as x1/2. For example, the principal square root of 9 is 3, denoted \sqrt{9} = 3, because 32 = 3 脳 3 = 9. If otherwise unqualified, ';the square root'; of a number refers to the principal square root: the square root of 2 is approximately 1.4142.








In mathematics, a prime number (or a prime) is a natural number which has exactly two distinct natural number divisors: 1 and itself. An infinitude of prime numbers exists, as demonstrated by Euclid around 300 BC. The first twenty-five prime numbers are:





2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97



The square root of a number is a number whose square is the original number


Example: square root of 4 is 2 because 2 squared is 2 times 2 which is 4





Prime numbers are those that can only be divided by 1 and themselves


Ex.: 3 is a prime number because you can divide it evenly by 1 and 3 and no others


4 is not a prime because it can be divided by 1, 2, and 4
sqare roots - example, whats the square root of 49? 7. because 7x7=49


example 2, what is the square root of 81? 9 because 9x9=81.








Prime number - a prime number is a number that can only be divided by one (1).





example 1, 2 is a prime number because only 1 can go into it.


example 2, 5 is a prime number because only 1 can go into it.











Do you get it?


caz if not email me.
Prime numbers are numbers that can be divided only by 1 and itself.


Some examples are: 2, 3, 5, 7.


1 doesn't count as a prime number.





A square root is like...


5 x 5 = 25.


6 x 6 = 36


2 x 2 = 4


See a pattern? The numbers being multiplied (5, 6, 2) are the square roots.


It's hard to explain, but I hope you understand what I'm trying to say.





Good luck with the test! :)
Prime Number: A number that has exactly 2 factors: 1 and itself.





ITS SIMPLE!!!