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Compute the exact value. $$ 4^{2} $$

Short Answer

Expert verified
The exact value of \(4^2\) is 16.

Step by step solution

01

Identify the Base and Exponent

The given expression is \(4^2\). Here, 4 is the base and 2 is the exponent. The exponent tells us how many times the base is multiplied by itself.
02

Rewrite the Expression

Rewrite the expression \(4^2\) as \(4 \times 4\). This is because raising a number to an exponent of 2 means multiplying the number by itself once.
03

Perform the Multiplication

Multiply the numbers: \(4 \times 4 = 16\). This is the result of the multiplication step.
04

Write the Final Answer

The exact value of \(4^2\) is 16, after following the steps of identifying the base and exponent, rewriting the expression, and performing the multiplication.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Base and Exponent
In mathematics, an exponential expression is a way to express repeated multiplication of the same number, known as the base. The base is the number being multiplied, while the exponent tells us how many times this multiplication occurs. For example, in the expression \(4^2\), 4 is the base and 2 is the exponent.

The base is crucial because it is the foundational number we are repeatedly multiplying. Meanwhile, the exponent simplifies the whole operation by telling us the number of times to repeat the base as a factor. The notation is convenient because it compresses long multiplication processes into a compact form.
  • The base appears on the bottom part of the expression.
  • The exponent is written as a smaller number to the upper right of the base.
Understanding this terminology is key to working with exponents effectively.
Multiplication
Multiplication is a fundamental arithmetic operation where we determine the total of adding the same number multiple times. In the context of exponents, multiplication plays an essential role because it executes the repeated operation indicated by the exponent.

When you see an expression like \(4^2\), it means that you should multiply the base (4) by itself as many times as indicated by the exponent (2). Hence, you rewrite \(4^2\) as \(4 \times 4\). Here, the two occurrences of 4 are multiplied together to find the result.

Tips for multiplication with exponents:
  • It's important to perform each multiplication step correctly to avoid errors.
  • Focus on multiplying the exact base indicated for the number of times shown by the exponent.
Practicing multiplication will help better understand and solve exponential calculations.
Exponential Expression
An exponential expression involves the compact representation of repeated multiplication using a base and an exponent. These expressions are found everywhere in mathematics because they convey large numbers succinctly and conveniently.

For instance, \(4^2\) is an exponential expression which means multiply 4 by itself: yielding 16. Here the exponent (2) indicates how many times we are to operate on the base (4) with multiplication.

When working with exponential expressions:
  • Always identify the base and the exponent correctly.
  • Rewrite the exponential expression as a multiplication operation before computing it.
This ensures that you correctly interpret and calculate the value of these expressions efficiently. Understanding how exponential expressions work is a foundational skill needed in many areas of mathematics.

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Most popular questions from this chapter

Simplify the given radical expression. $$ \sqrt{-36} $$

Perform each of the following tasks for the given equation. 1\. Load the left- and right-hand sides of the given equation into Y1 and Y2, respectively. Adjust the WINDOW parameters until all points of intersection (if any) are visible in your viewing window. Use the intersect utility in the CALC menu to determine the coordinates of any points of intersection. 2\. Make a copy of the image in your viewing window on your homework paper. Label and scale each axis with xmin, xmax, ymin, and ymax. Label each graph with its equation. Drop dashed vertical lines from each point of intersection to the \(x\) axis, then shade and label each solution of the given equation on the \(x\) -axis. Remember to draw all lines with a ruler. 3\. Solve each problem algebraically. Use a calculator to approximate any radicals and compare these solutions with those found in parts (1) and (2). $$ x^{5}=4 $$

Compute the exact value. $$ 256^{\frac{5}{4}} $$

Perform each of the following tasks for the given equation. 1\. Load the left- and right-hand sides of the given equation into Y1 and Y2, respectively. Adjust the WINDOW parameters until all points of intersection (if any) are visible in your viewing window. Use the intersect utility in the CALC menu to determine the coordinates of any points of intersection. 2\. Make a copy of the image in your viewing window on your homework paper. Label and scale each axis with xmin, xmax, ymin, and ymax. Label each graph with its equation. Drop dashed vertical lines from each point of intersection to the \(x\) axis, then shade and label each solution of the given equation on the \(x\) -axis. Remember to draw all lines with a ruler. 3\. Solve each problem algebraically. Use a calculator to approximate any radicals and compare these solutions with those found in parts (1) and (2). $$ x^{6}=-5 $$

Simplify the quotient, and write your answer in the form \(x^{r}\). $$ \frac{x^{-\frac{2}{3}}}{x^{\frac{1}{4}}} $$

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