Please help me with this asap

Find the complete factored form of the polynomial 40m^3n^2+45m^2n^6

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

3382-299=3383- ? fill in the blank?