What Are The Five Main Exponent Properties

Understanding the Five Exponent Properties

We are going to talk about five exponent properties. You can think about them as the order of operations for exponents. Just like the order of operations, you need to memorize these operations to be successful. The five exponent properties are:

• Product of Powers
• Power to a Power
• Quotient of Powers
• Power of a Product
• Power of a Quotient

Let's look at the first one.

Product of Powers

Here's the formula: (x^a)(x^b) = x^(a + b). When you multiply exponentials with the same base (notice that xand x are the same base), add their exponents (or powers).

Let me show you how that works. Let's say I have (x^2)(x^3). Well, x^2 is x times x, and x^3 is x times x times x. When we add all those xs up, we get x^5, which is the same thing as adding 3 + 2.

Power to a Power

We can see from the formula we have (x^a)^b. When you have a power to a power, you multiply the exponents (or powers). Let me show you how this one works.

If I have (x^2)^4, which would be x^2 multiplied four times, or x^2 times x^2 times x^2 times x^2. Once again, we add all the exponents and get x^8, and x^8 is the same as x^(2 ×4), which is 8. Not too bad, right?

Quotient of Powers

Remember, 'quotient' means 'division'.' The formula says (x^a) / (x^b) = x^(a - b). Basically, when you divide exponentials with the same base, you subtract the exponent (or powers).

Let me show you how this one works. Let's say I had (x^4) / (x^3). In the top (or numerator), we have x times x times x times x. In the bottom (or denominator), we have x times x times x. Hopefully, you remember that xdivided by x is 1, so the xs cancel. So, x divided by x is 1, x divided by x is 1, and x divided by x is 1. So, when we cancel them, what are we left with? That's right: x^1, or just x. So (x^4) / (x^3) is just x^(4 - 3), which is x^1.

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Power of a Product

The formula says (xy)^a = (x^a) and (y^a). When you have a product of a power, you give each base its own exponent. Think about it as distribution putting the exponent with each base.

Let me show you how this one works. Let's say we had (xy)^2. That means we take xy and multiply it twice that means xy times xy. Well, that would give us two xs, or x^2, and two ys, or y^2. That is the same as if I distributed 2 to the x, getting x^2, and 2 to the y, getting y^2.

Power of a Quotient

When we look at this formula, we have x/y, or a fraction raised to the a power, this gives us (x^a) / (y^a). When you have a quotient to a power, you give each base its own exponent. We think of it as the exponent being distributed to each part of the fraction, just like the last one, power of a product.

Let me show you how this one works. Let's say I have (x / y)^3. Remember, that means I'm going to take x / yand multiply it three times. That would be x / y times x / y times x / y. If we look at the top (or the numerator), we have x times x times x, or x^3. If we look at the bottom (or denominator), we have y times ytimes y, or y^3. That would give us (x^3) / (y^3), which is basically distributing 3 to the x and y .