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Both terms in the binomial have positive exponents of x and so it is not possible for there to be a constant term in its expansion. If the second term is a negative power then it is not possible to tell whether it should be (a/x^2) or 1/(ax^2) which will yield different answers.

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7y ago
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Q: If the constant term of (x3 plus ax2)5 is equal to -270 then what is a?
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