Question

Subtract these polynomials.

(6x^3-4x+5)-(3x^3-5x^2+6x-2)

Answer 1

first distribute the negative over the second set of parentheses
- that will result in a change of sign for every term in th parentheses.

Answer 2

so, for example, - 5x^2 will change to + 5x^2

Answer 3

after I do that , I just work it like Im multiplying it ?

Answer 4

so we get


(6x^3-4x+5)-(3x^3-5x^2+6x-2)
= 6x^3 - 4x + 5 - 3x^3 + 5x^2 ...

can you continue?

Answer 5

remember to change the sign

Answer 6

Here are the steps:
1. Drop the first set of parentheses.
2. To drop the second set of parentheses, change every sign inside the second set of parentheses.
3. Combine like terms.

Answer 7

Thank you so much , I get it now :)

Answer 8

yes - i should have said to drop the first set of panentheses

Answer 9

good
yw