Question

How do you simplify `8(n-7)+4n(n+4)`?

Answer 1

`= 4n^2 + 24 n - 56`

Explanation:

`color(green)(8) ( n -7 ) + color(blue)(4n) ( n+4)`

`= color(green)(8) * ( n) + color(green)(8) * ( -7 ) + color(blue)(4n) * ( n) + color(blue)(4n)* (4)`

`= 8n - 56 + 4n^2 + 16n`

`= 4n^2 + (16n + 8n ) - 56`

`= 4n^2 + 24 n - 56`