Question

what is the opposite polynomial to 9 - 12n 2 + 4n 3 - 7n

Answer 1

Any ideas?

Answer 2

Hint: the opposite of a number a is written as -a.

Answer 3

I still don't understand this

Answer 4

replace "a" with your polynomial

Answer 5

$$\huge \text{Let a = } 9 - 12n^2 + 4n^3 - 7n$$

Answer 6

The opposite of a = -a

Answer 7

oh thank you

Answer 8

$$\Huge-a= -(9 - 12n^2 + 4n^3 - 7n)$$

Answer 9

To subtract a real number you add the opposite of that number

a - b = a + (-b)

to subtract a polynomial you add the opposite of each term of that polynomial

and then simplify.