Apply the exponent to each variable separately

Oct 13, 2025 by windailys.com 53 views

Introduction

In mathematics, the concept of exponentiation is crucial in understanding various mathematical operations. When dealing with exponents, it's essential to know how to simplify expressions and rewrite them in different forms. In this article, we will explore the concept of equivalent expressions and how to rewrite the given expression $\left(x^9 y z^4\right)^5$ in a simpler form.

Understanding Exponents

Exponents are a shorthand way of representing repeated multiplication. For example, $x^3$ can be written as $x \cdot x \cdot x$ . When we have an expression with multiple variables, such as $\left(x^9 y z^4\right)^5$ , we need to apply the exponent to each variable separately.

Applying the Exponent

To rewrite the given expression, we need to apply the exponent $5$ to each variable. This means we need to multiply each variable by itself $5$ times.

Applying the Exponent to $x^9$

When we apply the exponent $5$ to $x^9$ , we get:

\left(x^9\right)^5 = x^{9 \cdot 5} = x^{45}

Applying the Exponent to $y$

When we apply the exponent $5$ to $y$ , we get:

y^5

Applying the Exponent to $z^4$

When we apply the exponent $5$ to $z^4$ , we get:

\left(z^4\right)^5 = z^{4 \cdot 5} = z^{20}

Rewriting the Expression

Now that we have applied the exponent to each variable, we can rewrite the original expression as:

\left(x^9 y z^4\right)^5 = x^{45} y^5 z^{20}

Conclusion

In conclusion, the expression equivalent to $\left(x^9 y z^4\right)^5$ is $x^{45} y^5 z^{20}$ . This is achieved by applying the exponent $5$ to each variable separately and then rewriting the expression in a simpler form.

Example Use Cases

This concept of equivalent expressions is crucial in various mathematical operations, such as:

Simplifying expressions: By rewriting expressions in a simpler form, we can make it easier to perform mathematical operations.
Evaluating expressions: By applying the exponent to each variable, we can evaluate the expression more efficiently.
Solving equations: By rewriting expressions in a simpler form, we can make it easier to solve equations.

Tips and Tricks

When dealing with exponents, it's essential to remember the following tips and tricks:

Apply the exponent to each variable separately: This ensures that we get the correct result.
Use the exponent rule: The exponent rule states that $\left(a^m\right)^n = a^{m \cdot n}$ .
Simplify the expression: By rewriting the expression in a simpler form, we can make it easier to perform mathematical operations.

Common Mistakes

When dealing with exponents, it's essential to avoid the following common mistakes:

Not applying the exponent to each variable separately: This can lead to incorrect results.
Not using the exponent rule: This can lead to incorrect results.
Not simplifying the expression: This can make it harder to perform mathematical operations.

Conclusion

$In conclusion, the expression equivalent to $\left(x^9 y z^4\right)^5$ is $x^{45} y^5 z^{20}$. This is achieved by applying the exponent $5$ to each variable separately and then rewriting the expression in a simpler form. By understanding the concept of equivalent expressions and applying the exponent correctly, we can simplify expressions, evaluate expressions, and solve equations more efficiently.<br/> **Q&A: Equivalent Expressions and Exponents**$

Introduction

In our previous article, we explored the concept of equivalent expressions and how to rewrite the expression $\left(x^9 y z^4\right)^5$ in a simpler form. In this article, we will answer some frequently asked questions related to equivalent expressions and exponents.

Q: What is the difference between equivalent expressions and equivalent equations?

A: Equivalent expressions and equivalent equations are related but distinct concepts. Equivalent expressions refer to expressions that have the same value, while equivalent equations refer to equations that have the same solution.

Q: How do I determine if two expressions are equivalent?

A: To determine if two expressions are equivalent, you can use the following steps:

Simplify each expression: Simplify each expression by combining like terms and applying the exponent rule.
Compare the expressions: Compare the simplified expressions to see if they are the same.
Check for equality: Check if the expressions are equal by substituting values for the variables.

Q: What is the exponent rule?

A: The exponent rule states that $\left(a^m\right)^n = a^{m \cdot n}$ . This means that when we raise a power to a power, we multiply the exponents.

Q: How do I apply the exponent rule?

A: To apply the exponent rule, follow these steps:

Identify the base and exponent: Identify the base and exponent in the expression.
Multiply the exponents: Multiply the exponents by multiplying the numbers.
Write the result: Write the result as a single exponent.

Q: What is the difference between a variable and a constant?

A: A variable is a symbol that represents a value that can change, while a constant is a value that does not change.

Q: How do I simplify an expression with variables and constants?

A: To simplify an expression with variables and constants, follow these steps:

Combine like terms: Combine like terms by adding or subtracting the coefficients.
Apply the exponent rule: Apply the exponent rule to simplify the expression.
Write the result: Write the result as a simplified expression.

Q: What is the order of operations?

A: The order of operations is a set of rules that tells us which operations to perform first when we have multiple operations in an expression. The order of operations is:

Parentheses: Evaluate expressions inside parentheses first.
Exponents: Evaluate expressions with exponents next.
Multiplication and Division: Evaluate multiplication and division operations from left to right.
Addition and Subtraction: Evaluate addition and subtraction operations from left to right.

Q: How do I evaluate an expression with multiple operations?

A: To evaluate an expression with multiple operations, follow these steps:

Apply the order of operations: Apply the order of operations to evaluate the expression.
Simplify the expression: Simplify the expression by combining like terms and applying the exponent rule.
Write the result: Write the result as a simplified expression.

Conclusion

In conclusion, equivalent expressions and exponents are fundamental concepts in mathematics. By understanding these concepts and applying the exponent rule, we can simplify expressions, evaluate expressions, and solve equations more efficiently. We hope this Q&A article has helped you understand these concepts better.