Question

PLEASE help me! I'm having trouble solving this raational inequality! x/(x+1) 12 years ago

Answer 1

when are they equal?

Answer 2

http://curriculum.kcdistancelearning.com/courses/ALG2x-HS-A09/a/assessments/Rt-SolvingRationalEquationsQuiz/A2_3.3_Quiz_24.gif

I know I have to convert it into an equation x/(x+1) - x/(x-1) = 0 but then I have to multiply it by the LCM and I don't know how to calculate LCM for these values (x+1) and (x-1)

Answer 3

forget the LCM, just cross multiply

Answer 4

I get x(x-1) - x(x+1)

Answer 5

good, now distribute thru

Answer 6

2x^2 = 0?

Answer 7

might need a little work on your distribution skills...

x(x-1) - x(x+1)

x^2-x - x^2-x

-2x = 0

Answer 8

The final answer is x=2 right?

Answer 9

of course not: divide each side by -2 to get x= 0

Answer 10

Ok. So the final answer is x>0?

Answer 11

no, you might want to wait to finding the end, until we arrive at the end.

Answer 12

Ok so x=0 how do we keep going? Substitute the values?

Answer 13

lets draw an x axis ... mark it at 0 to define where they are equal; then run some simple tests