Respuesta :

- - Solve:

[tex]=2m+-9*2m+-9[/tex]
[tex]2m*2m+2m*-9+-9*2m+-9*-9[/tex]
[tex]4m^2-18m-18m+81[/tex]
[tex]4m^2-36m+81[/tex]

Your final answer is 4m^2−36m+81
Leader
Use the formula: (a-b)² = a² -2ab + b²

(2m-9)² = (2m)² - 2(2m)(9) + 9²

= 4m² - 36m + 81