If x^2 = k + 1, then x^4 - 1 / x^2 + 1 =

Step-by-step explanation:

Since (x² + 1)(x² - 1) = x⁴ - 1,

(x⁴ - 1)/(x² + 1) = x² - 1 = k.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

step-by-step explanation: