Simplify the Expression: 8^4 × 8 × 8^-1 Using Exponent Laws

Question

Insert the corresponding expression:

84×8×81= 8^4\times8\times8^{-1}=

Video Solution

Solution Steps

00:00 Simplify the following problem
00:03 Any number raised to the power of 1 is always equal to itself
00:07 We'll apply this formula to our exercise, and raise to the power of 1
00:11 According to the laws of exponents, the multiplication of powers with an equal base (A)
00:15 equals the same base raised to the power of the sum of the exponents (N+M)
00:19 We'll apply this formula to our exercise
00:28 Note that we are adding a negative factor
00:34 A positive x A negative is always negative, therefore we subtract as follows
00:40 This is the solution

Step-by-Step Solution

To solve this problem, we will apply the multiplication of powers rule which states that when multiplying powers with the same base, we add their exponents.

Let's begin by analyzing the given expression: 84×8×81 8^4 \times 8 \times 8^{-1} .

Each term has the base 8, allowing us to use the exponent rule directly:

  • First, recognize the exponents for each term: the first term 84 8^4 has an exponent of 4, the second term 8 8 is equivalent to 81 8^1 , and the third term 81 8^{-1} has an exponent of -1.
  • Then, apply the formula by adding the exponents: 4+11 4 + 1 - 1 .

The resulting expression for the exponent is 84+11 8^{4+1-1} .

Therefore, the corresponding expression to the original product is 84+11 8^{4+1-1} .

Answer

84+11 8^{4+1-1}