For Method of Undetermined Coefficients, what is the guess for a constant to the power of x? Eg. 2+2^x

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I'm doing a initial value problem and need to use the method of undetermined coefficients. I have on the right side 2+2^x, and I'm unsure what guess I would use for this. I've seen every possible circumstance except for this case. For example, for e^3x, I would use Ae^3x. But what about 2+2^x?