Question

4+(m+n)x^4 when m is 7 and n is 5

Answer 1

`4+12x^(4)`

Explanation:

`m = 7`,
`n = 5`

`4 + (m + n) x^(4)`

`4 + (7 + 5) x^(4)`

`4+12x^(4)`

Answer 2

4+12x^4

Explanation:

4+(m+n)x^4 , when m=7 and n=5

4+((7)+(5))x^4

4+(7+5)x^4 *(7+5=12)*

4+12x^4

Hope it helps!