Question

(^3+6x-6)+(9x^3-7x+4)

Answer 1

add all the like terms together.

Answer 2

13x^3

Answer 3

okay, and what about the x terms? and the constants?

Answer 4

is it 13x^3+13x-2?

Answer 5

this is simplfying

Answer 6

how is 6x -7x = 13x?

Answer 7

-13?

Answer 8

huh? tell me, what is 6-7?

Answer 9

well see 7-6 is 1 but im looking at it as take away 7 from 6

Answer 10

right, so you end up with negative 1.

Answer 11

oh ok

Answer 12

it is like if I owed you 5 dollars and then I gave you 10 dollars, you now owe me 5 dollars.
In other words, I can say that I owe you negative 5 dollars.

Answer 13

i dont know what i was thinking so its 13x^3-1-2

Answer 14

or 13x^3-3

Answer 15

no no. it is 6x - 7x, not 6-7. I was just telling you that to explain what 6-7 means.
your equation is 13x^3-x-2

Answer 16

okay i see now thanks