Question

HELP PLSSSSSS
30 points pls no stupid things

Answer 1

Therefore,

`(m^(2)+2mn+ n^(2)+5)+(2m^(2)-3n^(2)-2)+(-3mn+2n^(2) +m-3)=3m^(2)-mn+m`

Explanation:

Given:

`(m^(2)+2mn+ n^(2)+5)+(2m^(2)-3n^(2)-2)+(-3mn+2n^(2) +m-3)`

Addition in Column form is as follow

m² + 2mn + n² + 0m + 5

+ 2m² + 0mn - 3n² + 0m - 2

+ 0m² - 3mn + 2n² + m - 3

3m² - mn + 0n² + m+ 0

Therefore,

`(m^(2)+2mn+ n^(2)+5)+(2m^(2)-3n^(2)-2)+(-3mn+2n^(2) +m-3)=3m^(2)-mn+m`