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Rules of Exponents or Laws of Exponents




 
In these lessons, we will learn the Rules of Exponents and how they can be used to simplify expressions.

Related Topics:
More Arithmetic Lessons, More Algebra Lessons

Multiplication or Product Rule:
To multiply powers with the same base, keep the base the same and add the exponents.

Division or Quotient Rule:
To divide powers with the same base, keep the base the same and subtract the exponents.

Power of a Power Rule:
When a power has an exponent, keep the base the same and multiply the exponents.

Some of the Rules of Exponents or Laws of Exponents are summarized in the following table. Scroll down the page for examples and solutions on how to use the Rules of Exponents.

Text Box: First Rule: 		   Second Rule:		   Third Rule:		   Fourth Rule:		   Fifth Rule:

We will now consider combined operations of multiplication and division on numbers in exponent form, using all the rules of exponents introduced above.

Example:

Simplify the following expressions, giving your answers in exponent form:

Text Box: a) 23 × (22)3 ÷ 24  b) (2p3)3 ÷ 3(p2)3  c)


Solution:




How to simplify expressions using the Product Rule of Exponents?
The product rule of exponents states that to multiply exponential terms with the same base, add the exponents.
Example:
Write each of the following products using a single base. Do not simplify further.
1. x2 • x4
2. (-2)4 • (-2)1
3. y4 • y5 • y How to simplify expressions using the Quotient Rule of Exponents?
The quotient rule of exponents states that to divide exponential terms with the same base, subtract the exponents.
Example:
Write each of the following products using a single base. Do not simplify further.
1. t7 / t3
2. (-2)15 / (-2)12 How to simplify expressions using the Power Rule of Exponents?
Example:
Write each of the following products using a single base. Do not simplify further.
1. (x3)2
2. ((2y)4)3
3. ((-3)4)6


 
How to simplify expressions using the Power of a Product Rule of Exponents?
Example:
Simplify each expression.
1. (x3)2
2. (3az)6
3. (-4b5)2
4. 1/(-2p)4
5. (a-3b2)4 How to simplify expressions using the Power of a Quotient Rule of Exponents?
Example:
Simplify each expression.
1. (2/x4)3
2. (p3/q)4
3. (-1/y3)12
4. (m2n-4)3
5. (3-2z-3)2 How to simplify expressions using the Quotient and Zero Exponent Rules?
Example:
Simplify each expression using the zero exponent rule. Assume all variables are nonzero. How to simplify expressions using the Quotient and Negative Exponent Rules?
Example:
Write each quotient using a single base. Do not simplify further. Write all answers with positive exponents.

How to simplify expressions using the Product, Quotient and Zero Exponent Rules?
Example:
Write each expression using a single base. Do not simplify further. Write all answers with positive exponents. Tutorial on the Basic Exponent Rules
Multiplication, Division, Power of a Power Learn exponent rules through music and songs


 

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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