The problem
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why did -6 and -2 become positive
Answer provided by our tutors
If there are an even number (0, 2, 4, ...) of negative factors to multiply, the product is positive.
If there are an odd number (1, 3, 5, ...) of negative factors, the product is negative.
In this case there is even number of negative factors - there are two minuses "-" in the expression and when they multiply they become positive: