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A negative times a negative always equals a positive, no matter what the numbers are.
the same as all integer exponents, repeated multiplication the indicated number of times. Negative numbers when cubed yield negative numbers.
The same as +4 times +8. The product of two negative numbers is positive.
If the signs of both numbers are the same, the product will be positive. If the signs of the numbers are different, the product will be negative.
A negative. If you have a string of positive and negative numbers multiplied together, all you need to find the sign of the answer is to find the parity of the negative numbers. If there are an odd number of negatives then the answer is negative and if there are an even number of negatives then the answer is positive. Remember, positive numbers make no difference to the sign of the answer.