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Positive Exponents

 

In this video, we are going to look at how to simplify numbers raised to positive exponents.

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For example:
To simplify the following:
2^4
we have to multiply the 2 by itself, 4 times which would simplify to:
2 \times 2 \times 2 \times 2=16

Other examples:

x^3=x \times x \times x
3^4=3 \times 3 \times 3 \times 3=81

Video-Lesson Transcript

This is a quick lesson on positive exponents.

Let’s look at an example.

2^4

2 is known as the base and the 4 is the exponent

This means that we’re going to multiply the base by itself by the number of the exponent.

So 2^4 = 2 \times 2 \times 2 \times 2

Our final answer is 16.

2^4 is 2 multiplied 4 times.

2^4 is not the same as 2 \times 4.

What if we have 3^4?

This means we’re going to multiply 3 4 times.

3^4 = 3 \times 3 \times 3 \times 3 = 81

If we have 4^3 this is 4 multiplied 3 times.

4^3 = 4 \times 4 \times 4 = 64

Positive Exponents

So we have to multiply the base by itself. The number of times you do it is what the exponent stands for.

If you see a term or variable raised to an exponent such as x^5.

This only means that we have x multiplied by itself 5 times.

x^5 = x \times x \times x \times x \times x

Just to review, we have the base and the small number at the top is the exponent.