Here's the problem:

(-2)²-2(-2)3+3²

First I got rid of exponents:

4-2(-2)3+9

Then I multiplied:

4-12+9

Last, I added and subtracted:

4-12+9=1

But here's the problem, 1 is not the answer, 25 is the answer, but I have no idea how someone would get 25. What am I doing wrong?