Question

Lorne subtracted 6x3 – 2x + 3 from –3x3 + 5x2 + 4x – 7. Use the drop-down menus to identify the steps Lorne used to find the difference. 1. (–3x3 + 5x2 + 4x – 7) + (–6x3 + 2x – 3) 2. (–3x3) + 5x2 + 4x + (–7) + (–6x3) + 2x + (–3) 3. [(–3x3) + (–6x3)] + [4x + 2x] + [(–7) + (–3)] + [5x2] 4. –9x3 + 6x + (–10) + 5x2 5. –9x3 + 5x2 + 6x – 10

Answer 1

the guy above me is wrong

Explanation:

1-c

2-d

3-b

4-a

i did this n got em right hope it helps :)

Answer 2

`-9x^3 + 5x^2 + 6x-10`

Explanation:

Lorne subtracted
`6x^3 - 2x + 3` from
`-3x^3 + 5x^2 + 4x - 7`

We need to subtract
`6x^3 - 2x + 3`

`-3x^3 + 5x^2 + 4x - 7 - (6x^3 - 2x + 3)`

Multiply negative sign inside the parenthesis

`-3x^3 + 5x^2 + 4x - 7 -6x^3 +2x - 3`

Now combine like terms to simplify it

`-3x^3-6x^3 + 5x^2 + 4x+2x - 7 - 3`

`-9x^3 + 5x^2 + 6x-10`