Chapter 4: Problem 16
Decide whether each expression is equal to \(0,1,\) or \(-1 .\) $$ \frac{2^{0}}{0^{2}+2^{0}} $$
Short Answer
Expert verified
The expression simplifies to 1.
Step by step solution
01
- Simplify the numerator
Start by simplifying the numerator of the given expression. The numerator is given by the expression: \[ 2^0 \]Since any non-zero number raised to the power of 0 is equal to 1, we have:\[ 2^0 = 1 \]
02
- Simplify the denominator
Simplify the denominator, which is given by the expression: \[ 0^2 + 2^0 \]First, calculate both terms inside the denominator:\[ 0^2 = 0 \]\[ 2^0 = 1 \]Adding these results together gives:\[ 0 + 1 = 1 \]
03
- Divide the simplified numerator by the simplified denominator
Now, substitute the simplified numerator and denominator back into the expression to get:\[ \frac{2^0}{0^2 + 2^0} = \frac{1}{1} \]Since dividing 1 by 1 equals 1, the expression simplifies to:\[ \frac{1}{1} = 1 \]
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Exponentiation Rules
Exponentiation is a mathematical operation that involves raising a base number to the power of an exponent. For example, in the expression \(2^3\), 2 is the base, and 3 is the exponent. Exponentiation rules are crucial for simplifying algebraic expressions.
Here are some key exponentiation rules to keep in mind:
Here are some key exponentiation rules to keep in mind:
- Any non-zero number raised to the power of zero equals 1. For example: \(\text{a}^0 = 1\), where \(\text{a} eq 0\).
- The power of zero itself is always zero unless it is raised to zero, which is one of the few exceptions, like \(\text{0}^0 = 1\).
- Multiply two numbers with the same base by adding their exponents: \[a^m \times a^n = a^{m+n}\]
- Divide two numbers with the same base by subtracting their exponents: \[a^m / a^n = a^{m-n}\]
- Raising a power to another power means multiplying the exponents: \((a^m)^n = a^{m \times n}\)
Basic Arithmetic Operations
Basic arithmetic operations include addition, subtraction, multiplication, and division. These operations are foundational in mathematics and are frequently used when simplifying expressions.
Let's go over them:
Let's go over them:
- Addition (\text{+}): Combining two or more numbers to get their total or sum. \(3 + 2 = 5\).
- Subtraction (\text{-}): Taking one number away from another. \(5 - 2 = 3\).
- Multiplication (\text{x}): Adding a number to itself a certain number of times. \(4 \times 3 = 12\).
- Division (\text{÷}): Distributing a number into a specific number of parts. \(12 ÷ 4 = 3\).
- Simplify exponents first: \(2^0 = 1\).
- Then, perform operations inside parentheses: \(0^2 + 2^0 = 0 + 1 = 1\).
- Finally, perform division or multiplication: \(2^0 / (0^2 + 2^0) -> 1 / 1 = 1\).
Fraction Simplification
Simplifying fractions involves reducing them to their simplest form. A fraction consists of a numerator (top number) and a denominator (bottom number). To simplify a fraction, follow these steps:
Therefore, \( \frac{1}{1} = 1 \). This demonstrates the process of simplifying fractions and also how basic understanding of exponentiation and arithmetic rules helps.
- Find the Greatest Common Divisor (GCD) of the numerator and the denominator.
- Divide both the numerator and the denominator by their GCD.
- First, find their GCD, which is 4.
- Divide both by 4: \( \frac{8 ÷ 4}{12 ÷ 4} = \frac{2}{3} \).
Therefore, \( \frac{1}{1} = 1 \). This demonstrates the process of simplifying fractions and also how basic understanding of exponentiation and arithmetic rules helps.