<PRE><B>Question 124419</B>
(7/10x^3-3/10x-1/8)-(-1/10x^3+3/10x-1/8)
 
= [(7/(10x^3)-(3/10x)- (1/8)] - [(-1/x^3)+(3/10x)-(1/8)]

= (8/x^3)- (6/10x) 

lcd = 10x^3

= (80/lcd) - (6x^2/lcd)

= [80-6x^2]/10x^3

= [40-3x^2]/5x^3
--------------------
Cheers,
Stan H.



</PRE>