## Want to join the conversation?

Log in

kelly.podgorski

9 years agoPosted 9 years ago. Direct link to kelly.podgorski's post “Is it like finding 10% of...”

Is it like finding 10% of a number? I'm kind of confused with that a little...

•

(7 votes)

lin.bai99

7 years agoPosted 7 years ago. Direct link to lin.bai99's post “no,to find the square roo...”

no,to find the square root, you need to find what times itself is equal to the number under the radical

(12 votes)

Jessica Kendrick

8 years agoPosted 8 years ago. Direct link to Jessica Kendrick's post “what does one do if they ...”

what does one do if they are adding two square roots, such as the square root of 13 + the Square root of 13?

•

(10 votes)

Hakase

8 months agoPosted 8 months ago. Direct link to Hakase's post “In this case the square r...”

In this case the square roots behave like algebra. let √13 be a, then a + a = 2a , substitute a with 13 and you get the answer ; 2√13.

If you use a calculator then; (√13 + √13) = 2√13 = 7.21110255093.

The above question is 7 yrs old, but if anyone has the same question, please learn indices if you want to know more: Here's a link https://www.khanacademy.org/math/mr-class-7/x5270c9989b1e59e6:indices(4 votes)

Rose

10 years agoPosted 10 years ago. Direct link to Rose's post “Is there is a trick or sh...”

Is there is a trick or shortcut into finding the answer of a square root, other than guess and check?

•

(4 votes)

Jesse

10 years agoPosted 10 years ago. Direct link to Jesse's post “Most square roots are irr...”

Most square roots are irrational, meaning that their decimal form continues forever without a repeating pattern. If you are trying to take the square root of a number that is not a perfect square, the best you can hope for is an approximation. You are usually best served to use a calculator to get these results, but there is a method I enjoy for approximating square roots. It is an iterative method developed by Heron of Alexandria, an ancient Greek engineer.

First, guess a convenient value for the square root. Divide the number by your guess. Now you have two numbers that multiply to get your original number. Take the average of these two numbers. This becomes your second guess for the square root. So again, you can divide the original number by this new guess, and take the average of these two numbers to get a third guess, and so on. Soon consecutive guesses will not change much. This is the approximation of the square root.

(13 votes)

Michael Brown

8 years agoPosted 8 years ago. Direct link to Michael Brown's post “So the square root of a n...”

So the square root of a number is the number that when you multiply it by itself is equal to that number?

•

(5 votes)

Captain Voice

5 years agoPosted 5 years ago. Direct link to Captain Voice's post “Yes. Go to 0:40 in the vi...”

Yes. Go to

0:40

in the video to learn more.(3 votes)

Matt Stone

6 years agoPosted 6 years ago. Direct link to Matt Stone's post “So, is this how every "sq...”

So, is this how every "square root" is? Im a little confused...

•

(3 votes)

Richard Saunders

6 years agoPosted 6 years ago. Direct link to Richard Saunders's post “Yeah think about a square...”

Yeah think about a square root as the number you get when you multiply something by itself.

Helps to think about the definition of multiplication as adding a number to itself:

`2 x 3 = 2+2+2 = 3+3 = 6`

Exponents are similar, except now we're

**multiplying**the number to itself instead of**adding**it.`2^2 (squared) = 2 x 2 = 2+2 = 4`

3^2 (squared) = 3 x 3 = 3+3+3 = 9

Taking the square root is figuring out what number

**multiplied**by itself is equal to the number under the square root symbol.So:

`√4 = 2, because 2*2 OR 2^2 = 4`

√9 = 3, because 3 x 3 = 9 OR 3^2 = 9

Hopefully that helps!

(4 votes)

dhager

5 years agoPosted 5 years ago. Direct link to dhager's post “What will we use square r...”

What will we use square roots for?

•

(5 votes)

Aakash Rao

4 years agoPosted 4 years ago. Direct link to Aakash Rao's post “Square roots will be requ...”

Square roots will be required for a lot of things like transformations, graphing, trigonemetry

(4 votes)

Amina shamla

11 years agoPosted 11 years ago. Direct link to Amina shamla's post “My dad told me that if we...”

My dad told me that if we need to find the square of a number it will be easy if we know the square of the last number.The difference between one square and the next square is the sum of their square roots.

eg:-to find the square of 7

just add 6 and 7 to six square ie 36

36+6+7

=49 ie the square of 7•

(4 votes)

Ohad

11 years agoPosted 11 years ago. Direct link to Ohad's post “It's true, but there's a ...”

It's true, but there's a more general formula.

(x+1)^2= x^2+2x+1

For an example, we know that 100 squared is 10000, right? Well, 101 squared is (100+1)^2. That leads us to 100^2+2(100)+1, and the answer is- Finally-

10201. That's the result of 101 squared!(4 votes)

Qasim Hashmi

2 years agoPosted 2 years ago. Direct link to Qasim Hashmi's post “How would you find the sq...”

How would you find the square root of non-perfect squares?

•

(4 votes)

可汗学院

2 years agoPosted 2 years ago. Direct link to 可汗学院's post “Estimate it”

Estimate it

(2 votes)

gadjaero1

6 years agoPosted 6 years ago. Direct link to gadjaero1's post “What happens when the equ...”

What happens when the equation is (-8)^-2/3

•

(3 votes)

Kim Seidel

6 years agoPosted 6 years ago. Direct link to Kim Seidel's post “The denominator of the ex...”

The denominator of the exponent is telling you to do a cube root. The numerator is telling you to square the number.

You can do them in either order. Personally, I prefer to do the cube root first because I can work with smaller numbers.

Cube root(-8)=-2

Then square the -2: (-2)^2 = 4Hope this helps.

(4 votes)

100151824

6 years agoPosted 6 years ago. Direct link to 100151824's post “whats a square root”

whats a square root

•

(3 votes)

Cochran

6 years agoPosted 6 years ago. Direct link to Cochran's post “A square root is a number...”

A square root is a number that when multiplied by itself makes a specified quantity. For example 3, when 3 is multiplied by itself (3*3) it equals 9, thus making 3, the square root of 9.

(3 votes)