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You keep them the same if they have different bases

Q: When adding polynomials what do you do to the exponents?

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you do not do anything when you add numbers with exponents. you just figure out the answer. it is only if you multiply numbers with exponents, where you add the exponents..

Fractional exponents follow the same rules as integral exponents. Integral exponents are numbers raised to an integer power.

Addition and subtraction are inverse functions.

nothing, keep the exponents the same, remember you can only add or subtract when the exponents are the same

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Yes.

Adding and subtracting polynomials is simply the adding and subtracting of their like terms.

Nothing. The exponents are not affected when added polynomials. However, they play a role in which variables add or subtract another variable. For example. (3x^2+5x-6)+(4x^2-3x+4) The exponents would determine that when adding these polynomials that 3x^2 would be added to 4x^2 and so forth 5x-3x and finally -6 would be added to 4. With a final conclusion of (7x^2+2x-2)

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Add them up providing that the bases are the same.

The definition for polynomials is very restrictive. This is because it will give more information. It excludes radicals, negative exponents, and fractional exponents. When these are included, the expression becomes rational and not polynomial.

The numbers can have a positive or negative sign.

When multiplying something with exponents, you add it. When dividing something with exponents, you subtract it.

you do not do anything when you add numbers with exponents. you just figure out the answer. it is only if you multiply numbers with exponents, where you add the exponents..

Fractional exponents follow the same rules as integral exponents. Integral exponents are numbers raised to an integer power.

== 45x2+56b== == ---- ---- + 34x+23x+56x