# ALGEBRA

posted by
**GGIFT** on
.

If I add:

1+2x+6x^2+9x^3+7-2x+6x^2-9x^3...

won't I have to combine terms & then get

8+12x^2

cause won't the 9x^3 and the 2x cancel itself out???

posted by
**GGIFT** on
.

If I add:

1+2x+6x^2+9x^3+7-2x+6x^2-9x^3...

won't I have to combine terms & then get

8+12x^2

cause won't the 9x^3 and the 2x cancel itself out???