Anyone care to explain square roots???

Question

I'm completely math illiterate, and I keep encountering all sorts of math everywhere.....it's like a real life nightmare...lol Just kidding.
Anyway, yeah, could someone pls explain square roots? Can't fnd any good instructions online...

Thank you guys SOO much! NOW it's starting to make sense, which totally rocks.

Answer 1

The square root of any number "x" is the value that, when multiplied by itself, equals "x".

That sounds kind of complicated, but it's very simple. For example:

2 * 2 = 4, so the square root of 4 is 2;
3 * 3 = 9, so the square root of 9 is 3;
4 * 4 = 16, so the square root of 16 is 4.

Get the idea?

Answer 2

One of the big problems with math for many people is the strange language, "square" which we know all about coupled with root. Does a square have a root? Absolutely! A tree grows out of a root in the ground. A number representing the area of a square grows out of another number which is its root. A square of course has four equal sides and when we know just one side we can calculate the area. If a square area has a side of 2 feet, we multiply 2 feet x 2 feet = 4 square feet. Thus, the "square root" of 4 is 2 (whether we are talking about an actually area or any other quantity). We could simply say the root of 4 is 2 except the cube root of 8 is also 2 (2 feet is the side of a cube containing 8 cubic feet). There is really no reason that you (as a math student) should not be as familiar with square roots or cubic roots as you are with tree roots. They are just names for things that never change (only their size!). Good luck.

Answer 3

A square is a number multiple by itself. This also gives you the area of a square. For example.

If you have a square, that has a side 2 inches long. Then 2 times 2 is 4. The square has an are of 4 square inches.

The length of the side (2) is the square root of 4.

If it was a cube, instead of a square, the volume of the cube, would be 2 times 2, times 2, or 8 cubic inches. 2 is the cube root of 8.

Answer 4

In mathematics, a square root of a number x is a number 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 and denoted sqrt x . For example, the principal square root of 9 is 3 (denoted sqrt9=3.) because3^2=3*3=9 . The other square root of 9 (not the principal square root) is −3.

Square roots often arise when solving quadratic equations, or equations of the form ax2 + bx + c = 0, due to the variable x being squared.

Properties:

The principal square root function is a function which maps the set of non-negative real numbers onto itself.
The principal square root function always returns a unique value.
To obtain both roots of a positive number, take the value given by the principal square root function as the first root (root1) and obtain the second root (root2) by subtracting the first root from zero (ie root2 = 0 − root1).
for more pl. visit:

http://en.wikipedia.org/wiki/Square_root

Answer 5

It is when you multiply a number by itself : 2 x 2 = 4 ~~~~ two is the square root. Get it? Same with every other number. An easy one is : 12 x 12 = 144. Some people get confused and multiply the number by 2 : 9 x 2 = 18. INCORRECT. Correct would be 9 x 9 = 81. DING DING!

Answer 6

The square root of a number is just the number which when multiplied by itself gives the first number. So 2 is the square root of 4 because 2 * 2 = 4.

Answer 7

A square root of a number is a base number that when multiplied by itself equals the product.

The square root of 4 is 2 sq or 2x2
The square root of 25 is 5 sq or 5x5

etc..

Answer 8

What are squares? Suppose you are in a room which is square shaped. Suppose the area is 25 sq. met. If you take a tape and measure the distance between opposite walls you will find the dist. to be 5met. So you see square is associated with area and sq.root with linear dist. We know 5*5=5^2=25: 5 is the sq.root of 25. We have seen squares very much operate in our lives!

Answer 9

a square root is the "root of a number" so for example 25 is a perfect square. this means that it is two numbers that do not have decimals. the numbers are 5x5=25. so when you square root a number you are looking for the two numbers that it would take to multiply together to make it. the only restriction is that the number have to be the same. so for square root 49, you have to have find two number that would multiply together to make it. 7x7 works. so 7 is the square root of 49. other number that are not the perfect squares come out as decimals when square rooted. for example square root 35 = 5.916079783. this means if you take 5.916079783 and multiply it by its self you get 35. what you can also do is take 5.916079783 and square it to get 35. it goes both ways. the perfect squares are 1,4,9,16,25,36,49,64,81,100 with their square roots being 1,2,3,4,5,6,7,8,9 respectively.hope this helps.

Answer 10

i hate math but i was forced to take it in school lol... but as i recall.. the square root of 81 would be 9 because 9 times 9 is 81 and the square root of 144 is 12 because 12 times 12 is 144 and so on... a digit times the same digit would be the square root. i hope im not wrong or im more math stupid than i thought lol
anyways if im right i hope this helps u