Which of the following is equal to the rational expression when x = 5 or -3? x^2+x-6/x^2-2x-15 A. X-6/x-5
B. X+3/c-5
C. X-2/X+3
D. X-2/x-5

C. X-2/X+3

Step-by-step explanation:

(4/x) + (4/y) / (16/x2y2) is where we start. I will factor out

1/(16/x2y2).

(1/(16/x2y2)) (64xy2 + 4/y) = (x2y2/16)(64xy2 + 4/y)

I need to factor out a 4/y from there.

(x2y/4)(16xy + 1) = x2y (16xy + 1) / 4

if im undersanding the question correctly, its organized from 10

step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: