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Earn +20 ptsQ: Are polynomial expressions closed under subtraction?
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Are polynomial expressions closed under addition?
Yes.
Are integers closed under subtraction?
Yes.
Is a counting number closed under subtraction?
No.
Are rational numbers closed under division multiplication addition or subtraction?
Rational numbers are closed under addition, subtraction, multiplication. They are not closed under division, since you can't divide by zero. However, rational numbers excluding the zero are closed under division.
Are real numbers closed under addition and subtraction?
Real numbers are closed under addition and subtraction. To get a number outside the real number system you would have to use square root.
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