# Math Help - Algebra

1. ## Algebra

Given: x+y-z=xyz
Find the value of
$\frac{2x}{1-x^2}+\frac{2y}{1-y^2}+\frac{\sqrt z}{1-y^2}$
2x/(1-x^2)+2y(1-y^2)+(z)^1/2 /(1-y^2)
Please show all the steps involved.

2. Originally Posted by matsci0000
Given: $x+y-z=xyz$
Find the value of
$\frac{2x}{1-x^2}+\frac{2y}{1-y^2}+\frac{\sqrt{z}}{1-y^2}$
latex fix
...

3. ## Can this question be solved by Trigonometry

Let x=tan A
y=tan B
z=tan C

Before I proceed , can anyone tell whether the following equality is true or not?
tan A+ tan B -tan C= tan A tan B tan C

4. wrong forum -.- post your question in the algebra forum..