Find the error in the calculations below, if there is one: Line (1): 2703 + 863
Line (2): = (30)3 + (26)3
Line (3): = (3a + 2b) (3a)? - (3a) - (26) + (26)2)
Line (4): = (3a + 2b) (6a? - 6ab + 462)

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:

1e+27

step-by-step explanation:

answer: x=3 and y=4

step-by-step explanation: