Question

Write the expression in exponential form. four to the sixth power

Short answer

The expression 'four to the sixth power' in exponential form is \(4^{6}\).

Step-by-step solution

Understanding the expression

First, understand the meaning of the expression 'four to the sixth power'. In this case, 'four' is the base, and 'to the sixth power' means the base is raised to the power of 6.

Writing the expression in exponential form

The expression 'four to the sixth power' can be written in exponential form as \(4^{6}\). Here, 4 is the base and 6 is the exponent.

Key concepts

Exponents

Exponents are a shorthand used to express repeated multiplication of the same factor. When we have a number like four that needs to be multiplied by itself multiple times, exponentiation simplifies this process. For example, instead of writing out `4 × 4 × 4 × 4 × 4 × 4`, we use an exponent to compactly express this as 4 to the sixth power, which is noted mathematically as (4^6). The number 4 here is the base—it is the number being multiplied repeatedly. The exponent, in this case, 6, indicates how many times the base appears as a factor in the multiplication. Consequently, the exponent is sometimes referred to as the 'power' to which the base number is raised.

Understanding how to work with exponents is crucial as they play a significant role in various fields of mathematics, including algebra and calculus. They are also fundamental in scientific notation, where very large or small numbers are represented succinctly, and in the growth models described by exponentiation, which are used in disciplines such as biology, economics, and physics.

Power of a Number

The term 'power of a number' refers to the result you obtain when the number—the base—is raised to an exponent. It is a way to describe the multiplication that happens when you multiply a number by itself several times. In the expression (4^6), the 6 is not just a simple multiplier; rather, it tells you to use the number 4 as a factor six times. As we analyze the 'power' of a number, the key components to identify include the base and the exponent.

Calculating the power of a number is often one of the first steps in solving more complex mathematical equations. For starters, it helps to understand that any number raised to the power of one (e.g., (4^1)) is the number itself, while any number raised to the power of zero (e.g., (4^0)) is one. This foundational concept sets the stage for learning about negative and fractional exponents, which further expand the utility of exponentiation across different areas of math.

Exponential Notation

Exponential notation is an efficient way to express large or small numbers and repeated multiplication, making it easier to read and compute mathematical expressions. In exponential notation, a number is written as a base raised to an exponent, as shown in (4^6). The exponent appears as a superscript to the base number. This notation is incredibly beneficial when dealing with large numbers such as those found in scientific and financial calculations, where counting zeroes can be time-consuming and prone to error.

To fully utilize exponential notation, it is important to understand the laws of exponents, which govern how to manipulate expressions with exponents. These include the product of powers rule, power of a power rule, and power of a product rule, among others. For example, when multiplying two powers that have the same base, you can simply add the exponents. These rules are pivotal when simplifying expressions and solving equations that involve exponents, ensuring accurate calculations and solutions in various applications.