Math Tutor Explains: What is 81 to the Power of 84?

A math tutor would explain that to solve for 81 to the power of 84, we must first understand the structure. The number 81 is called the base, and the number 84 is called the exponent. In short, the base must be multiplied by itself the number of times as the exponent. Let’s look at this problem in more detail.

Math Tutor's Solution: 81 to the Power of 84 is equal to 20546676624565614862451498416155885079653201622046102358159270999966374048861267389552191932533220109064254492415648704270049511771169296358245747504151453485121

Methods

Step-by-step from math tutor: finding 81 to the power of 84

The first step a math tutor would suggest is to understand what it means when a number has an exponent. The “power” of a number indicates how many times the base would be multiplied by itself to reach the correct value.

The second step is to write the number in the base-exponent form, and lastly calculate what the final result would be. Consider the example of 2 to the power of 4: in exponent form that would be

242^4
. To solve this, we need to multiply the base, 2 by itself, 4 times -
2⋅2⋅2⋅22\cdot2\cdot2\cdot2
= 16. So
24=162^4 = 16
.

So re-applying these steps to our particular problem, we first convert our word problem to a base-exponent form of:

818481^{84}

To simplify this, all that is needed is to multiply it out:

81 x 81 x 81 x 81 x ... (for a total of 84 times) = 20546676624565614862451498416155885079653201622046102358159270999966374048861267389552191932533220109064254492415648704270049511771169296358245747504151453485121

Therefore, 81 to the power of 84 is 20546676624565614862451498416155885079653201622046102358159270999966374048861267389552191932533220109064254492415648704270049511771169296358245747504151453485121.

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