Simplify (b/5)⁴: Evaluating the Fourth Power of a Fraction

Insert the corresponding expression:

(b5)4= \left(\frac{b}{5}\right)^4=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:07 Let's simplify this problem together.
00:10 Remember, when a fraction is raised to a power, like power N,
00:15 we raise both the numerator and the denominator to that power.
00:19 We'll use this rule for our exercise now.
00:22 Let's raise the numerator and the denominator to power N.
00:27 And there you have it, that's the solution!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Insert the corresponding expression:

(b5)4= \left(\frac{b}{5}\right)^4=

2

Step-by-step solution

To solve this problem, we'll apply the exponent rule for fractions:

  • Step 1: Identify the fraction b5\frac{b}{5} and the power 44.
  • Step 2: Apply the exponent to both the numerator and the denominator, as per the formula.
  • Step 3: Use the rule (b5)4=b454 \left(\frac{b}{5}\right)^4 = \frac{b^4}{5^4} .

Now, let's work through the application:
Step 1: We have the base fraction b5\frac{b}{5} and exponent 44.
Step 2: According to the exponent rule, (ab)n=anbn \left(\frac{a}{b}\right)^n = \frac{a^n}{b^n} , apply the exponent 44 to both bb and 55.
Step 3: This results in the expression b454\frac{b^4}{5^4}.

Therefore, the expression (b5)4 \left(\frac{b}{5}\right)^4 simplifies to b454 \frac{b^4}{5^4} .

3

Final Answer

b454 \frac{b^4}{5^4}

Practice Quiz

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\( 112^0=\text{?} \)

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