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Two negative integers and one positive i...

Two negative integers and one positive integer are being multiplied. Find the sign of the product.

A

positive integer

B

negative integer

C

cannot be determined

D

none of the above

Text Solution

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The correct Answer is:
To determine the sign of the product when multiplying two negative integers and one positive integer, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Integers**: Let's denote the two negative integers as \( x \) and \( y \), and the positive integer as \( z \). So we have: - \( x < 0 \) (negative integer) - \( y < 0 \) (negative integer) - \( z > 0 \) (positive integer) 2. **Multiply the Two Negative Integers**: When we multiply two negative integers, the result is positive. Therefore, we calculate: \[ x \times y = -x \times -y = + (xy) \] This means the product of \( x \) and \( y \) is a positive integer. 3. **Multiply the Result with the Positive Integer**: Now, we take the positive result from the previous step and multiply it by the positive integer \( z \): \[ (xy) \times z = + (xy) \times +z = + (xyz) \] Since both \( xy \) and \( z \) are positive, their product will also be positive. 4. **Conclusion**: The final product of multiplying two negative integers and one positive integer is positive. ### Final Answer: The sign of the product is **positive**.
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