which equation shows the result after a correct first step in solving 6(a+3.9)=19.56?

6a+23.4=3.26
a+23.4=19.56
a+23.4=3.26
a+3.9=3.26

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:

there is no question content here, but you for the free points! : d

1 + (6 / x - 1)

step-by-step explanation:

divide using polynomial division.

c

step-by-step explanation: