What will be the sign of the result of the next exercise?
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What will be the sign of the result of the next exercise?
To determine the sign of the expression , we follow these logical steps:
Therefore, the sign of the result for the expression is Positive.
Positive
What will be the sign of the result of the next exercise?
\( (-2)\cdot(-4)= \)
Think of it as reversing a reversal. A negative number reverses direction, so multiplying by another negative reverses it back to positive! It's like saying "not not happy" means "happy".
Count the negative signs! If there's an even number of negatives, the answer is positive. If there's an odd number of negatives, the answer is negative.
For this type of question asking about the sign only, you just need to determine positive or negative. But calculating can help confirm your sign rule!
Addition and multiplication have different sign rules! For addition: negative + negative = negative. For multiplication: negative × negative = positive. Don't mix them up!
When signs are different (positive × negative or negative × positive), the result is always negative. Same signs = positive, different signs = negative.
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