Posted by **GGIFT** on Thursday, February 25, 2010 at 8:05am.

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???

- ALGEBRA -
**Reiny**, Thursday, February 25, 2010 at 8:17am
You can only add/subtract "like" terms, that is, you can add x^3's to x^'s, x's to x's etc.

so yes, you are right.

- ALGEBRA -
**GGIFT**, Thursday, February 25, 2010 at 8:20am
thanks!!!

## Answer This Question

## Related Questions

- math - could someone check my work please? I have to solve for 'x' Questions ~ ...
- math - could someone check my work please? I have to solve for 'x' Questions ~ ...
- algebra - 5x -3 = 11 + 12x combine like figures add 3 to both sides to remove ...
- Algebra - 2(3x - 7) + 4 (3 x + 2) = 6 (5 x + 9 ) + 3 how will solve it? well you...
- Simplifying Rational Expressions - 1.4x12 / 4x 2.d+7 / d^2-49 3.t^2-25 / t^2+t-...
- maths - Can someone please help me with solving this equation (I don't know how ...
- intermediate algebra - Write the equation of the line containing (-3,4) and ...
- Maths - you have to solve the following by finding the value of x and y. can u ...
- algebra--distributive - how would you do this prob. negative4-(5y+6) = negative ...
- Algebra1 - how do i sove this problem -12q+4=8q-6 -12+4=8q-6 First you want to ...

More Related Questions