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Q: What is a subtraction expression that involves two positive integers and has a negative answer?

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There is no specific name unless the exponents can only be non-negative integers. In the latter case, it is a quadratic expression.

To be closed under an operation, when that operation is applied to two member of a set then the result must also be a member of the set. Thus the sets ℂ (Complex numbers), ℝ (Real Numbers), ℚ (Rational Numbers) and ℤ (integers) are closed under subtraction. ℤ+ (the positive integers), ℤ- (the negative integers) and ℕ (the natural numbers) are not closed under subtraction as subtraction can lead to a result which is not a member of the set.

When you add two negative integers, the answer is still negative.

There are no negative integers greater than five.

Because a negative negative is the same a a positive, and because of the definition of subtraction and addition.

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There are infinitely many possible answers. For example, (3) - (5) = -2.

There are infinitely many possible answers. For example, (-3) - (-5) = 2.

any time the 2nd neg. has a larger absolute value than the 1st ex: (-3) - (-4) = +1

they both have something to do with positive and negative

If you are implying the expression can only have two terms than any expression where the second subtracted negative term is larger than the first negative term would work to give you a negative answer. e.g. (-4) - (-1) = -3, (-10) - (-3) = -7, (-412) - (-15) = -397, etc.

they both have something to do with positive and negative

Integers are any positive or negative whole numbers. Subtraction involves taking the subtrahend from the minuend.You take the value of the first, and take it away from the second, and depending on the signs that are similar (positive/negative) they can cancel and override each other.

The rules for addition are as follows:The sum of two negative integers is a negative integerThe sum of two positive integers is a positive integerThe rules for subtraction are as follows:If they are two positive numbers, do it normallyIf there is a negative and a positive ,change it to addition and switch the SECOND integer sign

yes, because an integer is a positive or negative, rational, whole number. when you subject integers, you still get a positive or negative, rational, whole number, which means that under the closure property of real numbers, the set of integers is closed under subtraction.

yes, because an integer is a positive or negative, rational, whole number. when you subject integers, you still get a positive or negative, rational, whole number, which means that under the closure property of real numbers, the set of integers is closed under subtraction.

If you interpret "whole numbers" as "integers", then yes. If you interpret "whole numbers" as "non-negative integers", then no.

It can be a problem to do with adding or subtracting or exponents.

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