Question

Perform operations please help

Answer 1

1. \[\left( \frac{ 1 }{ x+1 }-\frac{ 1 }{ x-2 } \right) / \frac{ 1 }{ x-2}\]

2. \[\frac{ -6 }{ x-y }+\frac{ 6 }{ x-z }-\frac{ 6z-6y }{ (y-x)(z-x)}\]

3. \[\frac{ b^2 }{ b^2-4 }-\frac{ 4 }{ b^2+2b}\]
For this one i have already factored \[b^2-4\rightarrow(b-2)(b+2)\] and \[b^2 +2b \rightarrow b(b+2)\]

Answer 2

I only need help with 1 & 2 now I got 3