Calculate (6/8)² : Square of a Fraction Problem

Question

Insert the corresponding expression:

(68)2= \left(\frac{6}{8}\right)^2=

Video Solution

Solution Steps

00:00 Simplify the following problem
00:03 According to the laws of exponents, a fraction raised to a power (N)
00:07 equals the numerator and denominator, each raised to the same power (N)
00:11 We'll apply this formula to our exercise
00:20 Let's calculate each power
00:30 This is the solution

Step-by-Step Solution

To solve this problem, we'll compute (68)2\left(\frac{6}{8}\right)^2 using the rule for powers of a fraction:

  • Step 1: Identify the numerator and denominator: a=6a = 6 and b=8b = 8.
  • Step 2: Apply the formula (ab)n=anbn\left(\frac{a}{b}\right)^n = \frac{a^n}{b^n} with n=2n = 2.
  • Step 3: Calculate an=62a^n = 6^2.
  • Step 4: Calculate bn=82b^n = 8^2.

Now, let's carry out the calculations:

Step 3: 62=366^2 = 36.

Step 4: 82=648^2 = 64.

Therefore, (68)2=3664\left(\frac{6}{8}\right)^2 = \frac{36}{64}.

We compare 3664\frac{36}{64} with the given answer choices:

  • Choice 1: 1216\frac{12}{16} is not equal.
  • Choice 2: 664\frac{6}{64} is not equal.
  • Choice 3: 3664\frac{36}{64} matches our result.
  • Choice 4: 368\frac{36}{8} is not equal.

Therefore, the correct answer is 3664\frac{36}{64}, which matches Choice 3.

Answer

3664 \frac{36}{64}