solve. x2 - 8x = 20
what are the solutions of 4x2 - 3x - 5 = 0?

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:

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step-by-step explanatio89

5x10^11 x 65

325 x 10^11

or

325,

answer is 60/15 use pemdas and simplify the top and bottom. then divde by 5 and

final answer 12/3

final simplified 4/1