Posted by
**ianian** on
.

If the expression (x^2+2x−1)^8 is completely expanded, what is the sum of the coefficients of the terms with even powers of x?

Details and assumptions

0 is an even number.

Thursday

March 30, 2017
Posted by
**ianian** on
.

If the expression (x^2+2x−1)^8 is completely expanded, what is the sum of the coefficients of the terms with even powers of x?

Details and assumptions

0 is an even number.

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