The LCM of 33x^2yz^3, 36x^3y^2z and 45xy^3z^2 is: 3,960x^3y^5z^2
33xyz
1,980x^3y^3z^3
2,190x^3yz^2
1,980xyz

Two technicians are discussing oil changes. technician a says that waste oil and old filters need to be disposed of according to the law. technician b says that old filters can be returned to the parts department for a core value. which technician is correct?           a. technician a only   b. both technicians a and b   c. technician b only   d. neither technician a nor b