Welcome to "What are Square Roots?" with Mr. J! Need help with square roots? You're in the right place!
Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for help with how to find the the square root of a number. Mr. J will go through square root examples and explain the steps of how to find the square root of a number.
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Hopefully this video is what you're looking for when it comes to square roots.
Welcome to Math with Mr. J.
In this video, I'm going to cover what are square roots.
Now, when we're looking for the square root of a given number, we need to think about
what number multiplied by itself gives us that given number.
That may not make any sense now, but after our examples, you'll see exactly what I mean.
So, let's jump into number 1, where we have a 3 and a 9.
Before we talk about square roots, let's talk about squaring a number.
Squaring a number means we have an exponent of 2.
That means we multiply the number by itself.
For example, 3 squared means 3 times 3.
So, let's do this.
3 squared means 3 times 3, which gives us 9, right?
3 squared equals 9.
Now, let's start with that 9 and do the opposite, or inverse, of squaring a number.
And that's going to be taking the square root.
So, let's start with 9 and take the square root.
So, that's going to give us, well, the square root of 9.
Let's think about what number multiplied by itself will equal the number under the square root symbol.
This is the square root symbol there, also known as the root symbol or radical symbol.
Well, we know 3 times 3 equals 9, so the square root of 9 is 3.
Think about it. We know 3 times 3 equals 9.
So, a number times itself equals the number under the square root symbol.
So, the square root of 9 equals 3.
Let's move on to number 2 and try another one.
So, 5 squared, 5 times 5, equals 25.
Let's start with 25 and take the square root.
So, the square root of 25.
What number times itself equals 25?
Well, we know 5 times 5 equals 25, so the square root of 25 equals 5.
5 times 5 equals 25.
A number times itself gives us the number under the square root symbol.
So, again, the square root of 25 equals 5.
Let's move on to numbers 3 and 4, and we're just going to take the square root of these numbers.
So, for number 3, we have the square root of 4.
Well, we know 2 times 2 equals 4.
2 times 2 equals 4.
A number times itself equals the number under the square root symbol.
So, the square root of 4 equals 2.
That's our final answer.
And lastly, number 4, we have the square root of 36.
Well, we know 6 times 6 equals 36.
A number times itself equals the number under the square root symbol.
So, the square root of 36 equals 6.
So, there you have it.
There are some examples of square roots and a basic explanation.
I hope that helped.
Thanks so much for watching.
Until next time, peace.
