To determine which pair shows equivalent expressions, let’s simplify each expression one by one.
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First pair: \(-4x-12 = -4(x+3)\)
- Right side: \(-4(x + 3) = -4x - 12\)
- This is equivalent.
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Second pair: \(-4(x+3) = 4x-12\)
- Left side: \(-4(x + 3) = -4x - 12\)
- This is not equivalent since \(-4x - 12 \neq 4x - 12\).
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Third pair: \(-4(x-3) = -4x-12\)
- Right side: \(-4(x - 3) = -4x + 12\)
- This is not equivalent since \(-4x + 12 \neq -4x - 12\).
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Fourth pair: \(4x+12 = -4(x-3)\)
- Right side: \(-4(x - 3) = -4x + 12\)
- This is not equivalent since \(4x + 12 \neq -4x + 12\).
The equivalent expressions are found in the first pair: \(-4x - 12 = -4(x + 3)\).