# Math Help - Simplification

1. ## Simplification

(4-x^2)^(1/2) + (1/2(4-x^2)^(-1/2)) (-2x)
Stuck on my calculus trying to simplify this algebra *sigh*...

2. Is this what it looks like?

$\sqrt{4-x^2} -\frac{2x}{2\sqrt{4-x^2}}$

3. Originally Posted by 11rdc11
Is this what it looks like?

$\sqrt{4-x^2} -\frac{2x}{2\sqrt{4-x^2}}$
yes

4. $\sqrt{4-x^2} -\frac{2x}{2\sqrt{4-x^2}}$

1st cancel out the 2

$\sqrt{4-x^2} -\frac{x}{\sqrt{4-x^2}}$

Next find common denominator

$\frac{-x^2 -x+4}{\sqrt{4-x^2}}$

Next rationlize