lots of math problems, and fast????

ok, I've got a couple and instead of splitting them into seperate threads, I thought I would post it all here, ok:

1: (simplify with only positive exponents)

sqrt(4x-16) / 4thsqrt (x-4)^3

and I can only make it 2(square root of (x-4))times(4th square root of (x-4) / x-4

is that right?

2: [(1/x^-2) + (4/x^-1*y^-1) + (1/y^-2)]^(-1/2)

I got square root of (x^2 + 4xy + y^2)/x^2 + 4xy + y^2

is that right?

3: find domain: y=log(2x-12)

is it all real numbers?

4: same deal, y=square root of tanx

all real numbers?

5: y=sqrt (square root) of (x-3) - sqrt(x+3)

all real numbers?

6: (solve albsolute value inequalities)

abs(x+1) < & = abs(x-3)

is is 2 <&= x <&= -4?

7: solve and sign chart:

2x^2 + 4x <&= 3

is it x= .581, 2.581?

8: use synthetic division to factor P(x) then solve P(x)=0

I've tried all numbers and can't get it to work

P(x) = x^3 - 6x^2 + 3x - 10

9: find vertical and horizontal asymptotes

y= (x+4)/(x^2 - 1)

and

y= (x^2 - x - 6) / (x^3 - x^2 + x - 6)

please please please help! I need it by tomorrow morning, so as soon as possible would be unbelievably helpful

THANK YOU!

-meg-

(you don't have to know all of them either, just please I'll take anything, I'm kinda desperare at this point)

also, I work backwards, giving me the answer will do, i can figure it out myself, in fact, I'd probably learn it better if i figured it out by myself, I just need input