What Does A Negative Times A Negative Equal

What is negative 4 times negative 5 equal.

Specifically it can be proven using the equation x a b a b a b where a and b are any positive numbers and x is unknown via factoring and reducing the expression. If you look at it on the number line walking backwards while facing in the negative direction you move in the positive direction. Let s think about a multiplication equation as a person walking right or left on a number line. For the student who does not know or been taught that a negative times a negative is a positive here is a way to think about it.

Here is a patterns based argument for why negative times negative should equal positive. Negative plus negative would equal positive in maths. Two negatives make a positive so a negative number times a negative number makes a positive number. Because you re adding a minus.

A negative times a negative always equals a positive no matter what the numbers are. The fact that a negative times a negative equals a positive can be proven mathematically using algebraic manipulation. 0 1 0 1 1. A negative number times a negative number equals a positive number.

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Picture your starting position as standing on a number line at 10 facing is a positive direction. He does this 3 times. Let s say the problem is 10 4. A negative times a negative is a positive 4 5 positive 20.