Given a(-3, 8), find the coordinates of the point b such that c(5, -8) is the midpoint of segment ab.

We know that the coordinates of the midpoint are the average of the coordinates of the two endpoints.

So, we have

Plug the known values for A and C and solve each equation for the coordinates of point B:

Multiply both equations by 2:

Subtract the known coordinate from each equation:

So, the point B is

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:

could you provide figure.