There are in general six laws of exponents in Mathematics. Exponents are used to show, repeated multiplication of a number by itself. For example, 7 Ã— 7 Ã— 7 can be represented as 7^{3}. Here, the exponent is â€˜3â€™ which stands for the number of times the number 7 is multiplied. 7 is the base here which is the actual number that is getting multiplied. So basically exponents or powers denotes the number of times a number can be multiplied. If the power is 2, that means the base number is multiplied two times with itself. Some of the examples are:
 3^{4} = 3Ã—3Ã—3Ã—3
 10^{5} = 10Ã—10Ã—10Ã—10Ã—10
 16^{3} = 16 Ã— 16 Ã— 16
Suppose, a number ‘a’ is multiplied by itself ntimes, then it is represented as a^{n}Â where a is the base and n is the exponent.
Exponents follow certain rules that help in simplifying expressions which are also called its laws. Let us discuss the laws of exponents in detail.
Rules of Exponents With Examples
As discussed earlier, there are majorly six laws or rules defined for exponents. In the table below, all the laws are represented.

Now let us discuss all the laws one by one with examples here.
Also, read:
Product With the Same Bases
As per this law, for any nonzero term a,
 a^{m}Ã—a^{nÂ }= a^{m+n}
where m and n are real numbers.
Example 1: What is the simplification of 5^{5}Â Ã— 5^{1}Â ?
Solution: 5^{5}Â Ã— 5^{1}Â = 5^{5+1}Â = 5^{6}
Example 2: What is the simplification of (âˆ’6)^{4} Ã— (âˆ’6)^{7}?
Solution: (âˆ’6)^{4} Ã— (âˆ’6)^{7Â }= (6)^{47Â }= (6)^{11}
Note: We can state that the law is applicable for negative terms also. Therefore the term m and n can be any integer.
Quotient with Same Bases
As per this rule,
 a^{m}/a^{n} = a^{mn}
where aÂ is a nonzero term and mÂ and nÂ are integers.
Example 3: Find the value when 10^{5} is divided by 10^{3}.
Solution: As per the question;
10^{5}/10^{3Â }
= 10^{5()3}
= 10^{5+3}
= 10^{2}
= 1/100
Power Raised to a Power
According to this law, if ‘a’ is the base, then the power raised to the power of base ‘a’ gives the product of the powers raised to the base ‘a’, such as;
 (a^{m})^{n} = a^{mn}
where a is a nonzero term and m and nÂ are integers.
Example 4: Express 8^{3} as a power with base 2.
Solution: We have, 2Ã—2Ã—2Â = 8Â = 2^{3}
Therefore, 8^{3}= (2^{3})^{3}Â = 2^{9}
Product to a Power
As per this rule, for two or more different bases, if the power is same, then;
 a^{nÂ }b^{nÂ }= (ab)^{n}
where a is a nonzero term and n is the integer.
Example 5: Simplify and write the exponential form of: 1/8 x 5^{3}
Solution: We can write, 1/8 = 2^{3}
Therefore, 2^{3} x 5^{3}Â = (2 Ã— 5)^{3}Â = 10^{3}
Quotient to a Power
As per this law, the fraction of two different bases with the same power is represented as;
 Â a^{n}/b^{nÂ }= (a/b)^{n}
where a and b are nonzero terms and n is an integer.
Example 6: Simplify the expression and find the value:15^{3}/5^{3}
Solution: We can write the given expression as;
(15/5)^{3}= 3^{3}Â = 27
Zero Power
According to this rule, when the power of any integer is zero, then its value is equal to 1, such as;
a^{0Â }= 1
where ‘a’ is any nonzero term.
Example 7: What is the value of 5^{0} + 2^{2} + 4^{0} + 7^{1} â€“ 3^{1}Â ?
Solution: 5^{0} + 2^{2} + 4^{0} + 7^{1} â€“ 3^{1}Â = 1+4+1+73= 10
This article covers the basic laws of exponents. For any further query on this topic please install BYJU’S – The Learning App.