SOLUTION: Hi , could someone help me simplify the following expession L^2M(2-M)/L^3(M-2) , I know from my text book that the answer is -M/L but I dont know how they come to that answer . W

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hi , could someone help me simplify the following expession L^2M(2-M)/L^3(M-2) , I know from my text book that the answer is -M/L but I dont know how they come to that answer . W      Log On


   

Question 631123: Hi , could someone help me simplify the following expession
L^2M(2-M)/L^3(M-2) , I know from my text book that the answer is -M/L but I dont know how they come to that answer . What happens to the (2-M) and the (M-2). I would be greatful if someone could give me an answer with all the workings explained please . Thank you for your time
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Re TY, Note: (2-M) = -(M-2) as -(M-2) = - M + 2  and Note the (-1) Below.  that's how it happens.

+L%5E2M%282-M%29%2FL%5E3%28M-2%29=+L%5E2M%2A%28-1%29%28M-2%29%2FL%5E3%28M-2%29+=+-+M%2FL