Review the basics of exponents

Oct 13, 2025 by windailys.com 40 views

Introduction

Simplifying algebraic expressions is a crucial skill in mathematics, and it's essential to understand the rules and techniques involved. In this article, we will focus on simplifying the given expression $\frac{20 w^3 \cdot 3 w^{12}}{4 w^5}$ using the properties of exponents and algebraic manipulation.

Understanding Exponents

Before we dive into simplifying the expression, let's review the basics of exponents. An exponent is a small number that is placed above and to the right of a base number, indicating how many times the base number should be multiplied by itself. For example, $w^3$ means $w$ multiplied by itself three times, or $w \cdot w \cdot w$ . When we multiply two or more numbers with the same base, we can add their exponents. For instance, $w^3 \cdot w^4 = w^{3+4} = w^7$ .

Simplifying the Expression

Now that we have a good understanding of exponents, let's simplify the given expression $\frac{20 w^3 \cdot 3 w^{12}}{4 w^5}$ . To simplify this expression, we need to apply the rules of exponents and algebraic manipulation.

First, let's simplify the numerator by multiplying the coefficients and adding the exponents of the variables.

$\frac{20 w^3 \cdot 3 w^{12}}{4 w^5} = \frac{60 w^{3+12}}{4 w^5}$

Using the rule of exponents, we can add the exponents of the variables in the numerator.

$\frac{60 w^{3+12}}{4 w^5} = \frac{60 w^{15}}{4 w^5}$

Canceling Out Common Factors

Now that we have simplified the numerator, let's focus on the denominator. We can simplify the denominator by canceling out common factors between the numerator and the denominator.

$\frac{60 w^{15}}{4 w^5} = \frac{60}{4} \cdot w^{15-5}$

Using the rule of division, we can divide the coefficients and subtract the exponents of the variables.

$\frac{60}{4} \cdot w^{15-5} = 15 \cdot w^{10}$

Final Simplification

Now that we have simplified the expression, let's review the final result.

$15 \cdot w^{10}$

This is the simplified form of the given expression $\frac{20 w^3 \cdot 3 w^{12}}{4 w^5}$ .

Conclusion

Simplifying algebraic expressions is an essential skill in mathematics, and it's crucial to understand the rules and techniques involved. In this article, we have simplified the expression $\frac{20 w^3 \cdot 3 w^{12}}{4 w^5}$ using the properties of exponents and algebraic manipulation. We have reviewed the basics of exponents, simplified the numerator, canceled out common factors, and arrived at the final simplified form of the expression.

Tips and Tricks

Here are some tips and tricks to help you simplify algebraic expressions:

Use the rule of exponents: When multiplying two or more numbers with the same base, add their exponents.
Cancel out common factors: When simplifying an expression, cancel out common factors between the numerator and the denominator.
Review the basics of exponents: Make sure you understand the basics of exponents, including how to multiply and divide numbers with the same base.

Practice Problems

Here are some practice problems to help you practice simplifying algebraic expressions:

Simplify the expression $\frac{24 x^4 \cdot 2 x^7}{6 x^2}$ .
Simplify the expression $\frac{36 y^9 \cdot 3 y^2}{12 y^5}$ .
Simplify the expression $\frac{48 z^3 \cdot 4 z^8}{16 z^2}$ .

Frequently Asked Questions

Here are some frequently asked questions about simplifying algebraic expressions:

What is the rule of exponents?: The rule of exponents states that when multiplying two or more numbers with the same base, add their exponents.
How do I cancel out common factors?: To cancel out common factors, identify the common factors between the numerator and the denominator and cancel them out.
What are some tips and tricks for simplifying algebraic expressions?: Some tips and tricks for simplifying algebraic expressions include using the rule of exponents, canceling out common factors, and reviewing the basics of exponents.

References

Here are some references for further reading on simplifying algebraic expressions:

Algebraic Manipulation: This article provides a comprehensive guide to algebraic manipulation, including simplifying expressions.
Exponents: This article provides a comprehensive guide to exponents, including how to multiply and divide numbers with the same base.
Simplifying Expressions: This article provides a comprehensive guide to simplifying expressions, including using the rule of exponents and canceling out common factors.

Introduction

In our previous article, we simplified the expression $\frac{20 w^3 \cdot 3 w^{12}}{4 w^5}$ using the properties of exponents and algebraic manipulation. In this article, we will answer some frequently asked questions about simplifying algebraic expressions.

Q&A

Q: What is the rule of exponents?

A: The rule of exponents states that when multiplying two or more numbers with the same base, add their exponents. For example, $w^3 \cdot w^4 = w^{3+4} = w^7$ .

Q: How do I simplify an expression with multiple variables?

A: To simplify an expression with multiple variables, you need to apply the rules of exponents and algebraic manipulation. For example, $\frac{20 w^3 \cdot 3 w^{12}}{4 w^5} = \frac{60 w^{3+12}}{4 w^5} = \frac{60 w^{15}}{4 w^5} = 15 \cdot w^{10}$ .

Q: What is the difference between simplifying an expression and solving an equation?

A: Simplifying an expression involves reducing the complexity of the expression by applying the rules of exponents and algebraic manipulation. Solving an equation involves finding the value of the variable that makes the equation true.

Q: How do I cancel out common factors in an expression?

A: To cancel out common factors in an expression, identify the common factors between the numerator and the denominator and cancel them out. For example, $\frac{60 w^{15}}{4 w^5} = \frac{60}{4} \cdot w^{15-5} = 15 \cdot w^{10}$ .

Q: What are some common mistakes to avoid when simplifying expressions?

A: Some common mistakes to avoid when simplifying expressions include:

Not applying the rule of exponents: Make sure to apply the rule of exponents when multiplying two or more numbers with the same base.
Not canceling out common factors: Make sure to cancel out common factors between the numerator and the denominator.
Not reviewing the basics of exponents: Make sure to review the basics of exponents, including how to multiply and divide numbers with the same base.

Q: How do I practice simplifying expressions?

A: To practice simplifying expressions, try the following:

Simplify expressions with different variables: Try simplifying expressions with different variables, such as $x$ , $y$ , and $z$ .
Simplify expressions with different exponents: Try simplifying expressions with different exponents, such as $x^2$ , $x^3$ , and $x^4$ .
Simplify expressions with multiple variables and exponents: Try simplifying expressions with multiple variables and exponents, such as $\frac{20 w^3 \cdot 3 w^{12}}{4 w^5}$ .