Question

How do you find the sum or difference of `(3c^3-c+11)-(c^2+2c+8)`?

Answer 1

`3c^3-c^2-3c+3`

Explanation:

Using place keepers. For example: `0c^2`

`3c^3+0c^2-c+11`
`ul(color(white)(3x^3+)c^2+2c+8) larr" subtract"`
`3c^3-c^2-3c+3`