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Select the expressions that are equivalent to \( 4(4 a+1)+2 \). \[ \begin{array}{l}16 a+6 \\ 6 a+16 \\ (4 a+1) 4+2 \\ 4(2 a+2 a+1)+2\end{array} \]

Ask by Gardner Morgan. in the United States
Jan 24,2025

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Tutor-Verified Answer

Answer

The equivalent expressions are \(16a + 6\), \((4a + 1) \cdot 4 + 2\), and \(4(2a + 2a + 1) + 2\).

Solution

To determine which expressions are equivalent to \( 4(4a + 1) + 2 \), let's simplify and compare each option. 1. **\( 16a + 6 \)** \[ 4(4a + 1) + 2 = 16a + 4 + 2 = 16a + 6 \] This **is equivalent**. 2. **\( 6a + 16 \)** \[ 6a + 16 \neq 16a + 6 \quad \text{(unless \( a = 1 \), which isn't generally true)} \] This **is not equivalent**. 3. **\( (4a + 1) \cdot 4 + 2 \)** \[ (4a + 1) \cdot 4 + 2 = 4(4a + 1) + 2 \] This is the **same as the original expression**, so it **is equivalent**. 4. **\( 4(2a + 2a + 1) + 2 \)** \[ 4(2a + 2a + 1) + 2 = 4(4a + 1) + 2 \] This simplifies to the **original expression**, so it **is equivalent**. **Therefore, the equivalent expressions are:** - \( 16a + 6 \) - \( (4a + 1) \cdot 4 + 2 \) - \( 4(2a + 2a + 1) + 2 \) **Answer:** All except the second expression are equivalent to \(4(4a+1)+2\).

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To simplify the expression \( 4(4a + 1) + 2 \), we first distribute the 4: \[ 4(4a + 1) = 16a + 4 \] Now, we add 2: \[ 16a + 4 + 2 = 16a + 6 \] Now, let's check which of the given expressions are equivalent to \( 16a + 6 \). 1. **\( 16a + 6 \)**: This is exactly what we found, so it is equivalent. 2. **\( 6a + 16 \)**: This is not equivalent to our expression. 3. **\( (4a + 1)4 + 2 \)**: This simplifies as follows: \[ (4a + 1)4 + 2 = 16a + 4 + 2 = 16a + 6 \] So, this is also equivalent. 4. **\( 4(2a + 2a + 1) + 2 \)**: We need to simplify this expression: \[ 4(2a + 2a + 1) = 4(4a + 1) = 16a + 4 \] Adding 2 gives us: \[ 16a + 4 + 2 = 16a + 6 \] This is also equivalent. The expressions that are equivalent to \( 4(4a + 1) + 2 \) are: - \( 16a + 6 \) - \( (4a + 1)4 + 2 \) - \( 4(2a + 2a + 1) + 2 \) So the final answer is: - **\( 16a + 6 \)** - **\( (4a + 1)4 + 2 \)** - **\( 4(2a + 2a + 1) + 2 \)**

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