Question

Collect like terms and simplify the expression:

12m2 – 9m + 5m – 4m2 – 7m + 10

Answer 1

$12m^2 - 9m + 5m - 4m^2 – 7m + 10\\ =12m^2 - 4m^2– 9m + 5m - 7m + 10\\ =(12m^2 - 4m^2)+ (5m - 9m - 7m) + 10\\ =8m^2-11m+10$