Can any of you check this out for me. i started getting back into math again and i kind of suck at it. This is a question out of one of my text books and they come up with a diffrent answer and i think they are wrong.

2x^3 - x^2 + y where x = -3 & y = 2

I come up with:

2(-3)^ 3 - (-3)^2 + 2

2(-27) - (-9) + 2

(-54) - (-9) + 2 = 61

they come up with

2(-3)^ 3 - (-3)^2 + 2

2(-27) - (9) + 2

-54 - 9 + 2 = -61

but wouldn't (-3^2) be (-9) not 9?


Thanks