Khris

Three tired and hungry men went to sleep with a bag of apples. One man woke up, ate 1/4 of the apples, then went back to sleep. Later a second man woke up and ate 2/3 of the remaining apples, then went back to sleep. Finally, the third man woke up and ate...

Can someone explain my equations to me, please? f(x)= 9x^3 + 2x^2 - 5x + 4 and g(x) = 5x^3 - 7x + 4. what is f(x)− g(x)?

Thanks