Can someone help me with this equation? I'm trying but it's not coming out right.

Question

anonymous · Answer

Find an exact solution for 
Then, find the approximate solution.

anonymous · Answer

start by "cross multiplying" to get 
$$2(\sqrt{5}-1)=\sqrt{5}x$$

anonymous · Answer

$$x=\frac{2(\sqrt{5}-1)}{\sqrt{5}}$$

anonymous · Answer

$$2\sqrt{5}-2=\sqrt{5}x$$
$$x=\frac{2\sqrt{5}-2}{\sqrt{5}}$$

anonymous · Answer

maybe you need to "rationalize the denominator" as well

anonymous · Answer

multiply and divide. You just have to keep track of things. It's better when you put parentheses on things when you do this.

anonymous · Answer

okay, i'll try again..

anonymous · Answer

I'm still getting an answer thats not on my choice list.. :/

anonymous · Answer

what are ur choices????

anonymous · Answer

a. 10-2 sqrt5/5; 1.1
b. 2-2sqrt5; -2.5
c. -2; 2
d. 2sqrt5-2/sqrt5; 1.1

anonymous · Answer

ya its d

anonymous · Answer

can you explain how you did and it got that answer please?

anonymous · Answer

see the first part of d has already been solved by satellite 73

anonymous · Answer

for 1.1,you can simply put the value of sqrt(5) and solve....

anonymous · Answer

Oh i see.. lol ty