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stochastic
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2x4 is the same as 4+4 right? they both equal 8 right? by what logic does -2 x -4 = 8. I know its a rule. but why?? shouldn't -4 + -4 = -8 or if it negates itself equal 0?
stochastic said:math without logic should not exist.
stochastic said:math without logic should not exist.
matt grime said:You agree x-x=0? That x*0=0 for all x? Then you agree that (-x)*(-y)=xy if x and y are positive numbers. Try to work out why.
stochastic said:No I don't agree at all. I did try working it out that's why I am on your silly forum asking. Simply giving examples I've already seen doesn't answer my question. I guess I'm to logical for math. If you have -4 apples and you take away another 4 apples that don't exist you still don't have any god damn apples. :grumpy:
stochastic said:No I don't agree at all. I did try working it out that's why I am on your silly forum asking.
Simply giving examples I've already seen doesn't answer my question.
I guess I'm to logical for math.
If you have 0 apples and then you receive 2 baskets of -4 apples you still don't have any god damn apples. :grumpy:
At least tell me what (-x)*(-y) is used for if nothing else.
stochastic;1352888I'm not seeking logic I'm trying to have it logically explained [/QUOTE said:That is called contradictory, and not logical. Practise what you preach.
Negative numbers are used in math to represent quantities that are less than zero. They are essential for describing situations where there is a decrease or a deficit, such as temperature below zero or a loss of money.
To multiply two negative numbers, we use the rule that states "a negative times a negative equals a positive." This means that when we multiply two negative numbers, the result will always be a positive number.
The rule "a negative times a negative equals a positive" is based on the concept of repeated addition. When we multiply two negative numbers, we are essentially adding a negative number to itself a certain number of times. Since adding a negative number is the same as subtracting a positive number, the result will always be a positive number.
No, the rule only applies to multiplication. In addition and subtraction, the result will depend on the signs of the numbers being operated on. For example, when subtracting a negative number from a positive number, the result will be a larger positive number. However, when subtracting a positive number from a negative number, the result will be a larger negative number.
Negative numbers and operations are crucial for understanding and solving real-world problems. They allow us to represent and manipulate quantities that are less than zero, which is essential in various fields such as economics, science, and engineering. For example, negative numbers are used to calculate profit and loss, measure temperature and altitude, and describe the motion of objects in physics.