Nigel tried to solve an equation step by step 3 (21-4)
4) = 20
2h - 4 = 10 Step
2h = 14 Step 2
h = 7
Step 3
Find Nigel's mistake.
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Step 1
Step 2
Step 3
Nigel did not make a mistake

1

Step-by-step explanation:

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:

answer: 72: 111

step-by-step explanation: