Math!!! can't solve this...
posted by hmmm .
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?
Not sure what's the point of using such a high power. Tedious, but doesn't provide any real insight.
@Steve r u sure of ur answer?
Steve is correct, the sum is 256
I let Wolfram do all the drudgery
Agree with Steve, this question is simply a test of patience.
Thanks, Reiny. I used wolfram also :)