Question

I need help with this problem, I will post it as a photo. Please help

Answer 1

Let's simplify the following expression:

`9.5z^2+1.4+7z-0.7-4z+z^2`

We get,

`9.5z^2+1.4+7z-0.7-4z+z^2`
`9.5z^2+z^2+7z-4z+1.4-0.7`
`10.5z^2+3z+0.7`

Therefore, the answer is 10.5z² + 3z + 0.7