Check my answers?
Find the domain of y= 2x-4 (square root symbol is over 2x-4)
My answer is X= -2
A square garden plot has an area of 24 ft2. Find the length of each side in simplest radical form. Calculate the length of each side to the nearest tenth of a foot.
my answer is 24 over 4 ; 6 ft.
Thanks

Question

Check my answers? 
Find the domain of y= 2x-4 (square root symbol is over 2x-4) 
My answer is X= -2
	A square garden plot has an area of 24 ft2. Find the length of each side in simplest radical form. Calculate the length of each side to the nearest tenth of a foot.
my answer is 24 over 4 ; 6 ft.
Thanks

photon336 · Answer

$$\frac{ 2x-4 }{ \sqrt{2x-4} } = f(x)$$ right?

photon336 · Answer

@Dumbledore18

dumbledore18 · Answer

Yes.

photon336 · Answer

look at the denominator, what do you know about radical signs?

dumbledore18 · Answer

Pretty much nothing... Lol

photon336 · Answer

lol well #1 thing you cant have a negative number under a radical sign, well you can but it won't be a real number, 

$$can't~have~any~number~less~than~zero~under~radical \sqrt{x<0}$$

photon336 · Answer

so this means that 

$$\sqrt{2x-4} > 0$$

marcelie · Answer

https://www.youtube.com/watch?v=hZEGZMb4uzQ this might be useful to find domain as well

photon336 · Answer

$$2x-4 > 0$$

$$x > 2 $$

so this means that any number greater than 2 the function will be defined. can you see why?