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If (5^1/5)^5 = 25^x, then x = ?

User Zeograd
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1 Answer

10 votes

Answer:

x = 1/2

Explanation:

The applicable rule of exponents is ...

(a^b)^c = a^(bc)

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(5^(1/5))^5 = 25^x . . . . given

5^(1/5×5) = (5^2)^x . . . . simplify left side, rewrite right side

5^1 = 5^(2x) . . . . . . . . . simplify further

1 = 2x . . . . . . . . . . . . . equate exponents of the same base

x = 1/2 . . . . . . . . . . . divide by 2

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Additional comment

The Order of Operations tells you that exponentiation must be evaluated before multiplication or division. That means 5^1/5 is evaluated as ...

(5^1)/5 = 5/5 = 1

If you want a fractional exponent, it must be put in parentheses: 5^(1/5). If you type your expression into the Go.ogle calculator, it will strictly adhere to the Order of Operations.

If (5^1/5)^5 = 25^x, then x = ?-example-1
If (5^1/5)^5 = 25^x, then x = ?-example-2
User Kenfire
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