Posted by Chandler on .
Can you check these questions for me?
1. Add: (3x^4x+2)+(9x^5x^2+x)
9x^5+3x^4x^2+2
2. Add: (4x^32x^2+x+4)+(9x^5x^2+4x)
x^5+4x^33x^2+13
3. Subtract:(4x^4+3x+x^2)(x^26+3x^3)
4x^43x^3+3x+6
4. Subtract: (5x6)(3x^32x^2)
3x^3+2x^2+5x6
5. Subtract: (x3x^4+2x^2)(x^3+4x^6)
4x^63x^4+x^3+2x^2x
6. (x+1)(x^2+x+1)
x^3+2x^22x+2
7. (x1)(x^3+x^2+x)
x^4x
Thanks in advance!

Math 
Reiny,
#5 should be 4x^63x^4x^3+2x^2x
in #6 how did you get a negative sign?
All terms are positive, should be x^3+2x^2+2x+2
the rest are ok