Question

quanto é: -2m ( -m + 2 ) = 3 ( 2m +1 ) ?

Answer 1

-2m ( -m + 2 ) = 3 ( 2m + 1)

2m² - m = 6m + 3

4m - m - 6m = 3

-3m = 3

m = 3/3

m = 1