The graph of the function f(x) = -(x + 3)(x-1) is shown below ?
which statement about the function is true?
the function is positive for all real values of x where x< -1.
the function is negative for all real values of x where x < -3 and where x> 1.
ne function is positive for all real values of x where x < 0
the function is negative for all real values of x where x < -3 or x> -1

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:

30005

yes ok                                            

b

step-by-step explanation: