intermediate algebra

[hopen2impov]

(9m^2n -8mn +4mn^2) - (7m^2n +6mn -7mn^2)
9m^2n -8mn +4mn^2 -7m^2n -6mn +7mn^2
9m^2n-7m^2n -8mn-6mn +4mn^2+7mn^2
answer 2m^2n -14mn +11mn^2

 

[wjm11]

(9m^2n -8mn +4mn^2) - (7m^2n +6mn -7mn^2)
9m^2n -8mn +4mn^2 -7m^2n -6mn +7mn^2
9m^2n-7m^2n -8mn-6mn +4mn^2+7mn^2
answer 2m^2n -14mn +11mn^2

Correct.

 

[hopen2impov]

I can't believe it, thank you so much for checking my math problem. I been studying a lot trying to improve.