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In the expansion of (x^2 + x^(-2))^22, how many terms are there where x has a negative exponent?

 Jun 2, 2020
 #1
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Your expression is written like this:  (x^2 + 1/x^2)^22 . So both terms are +. Therefore, there is NO minus sign in the expansion of the 23 terms.

 Jun 2, 2020
 #2
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Now, for negative EXPONENTS, I counted 11 of them from x^-44, x^-40, x^-36.........x^-4.

Guest Jun 2, 2020

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