Evaluate (5×6×8)^(-9): Negative Exponent Expression Problem

Insert the corresponding expression:

(5×6×8)9= \left(5\times6\times8\right)^{-9}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:08 Let's simplify this problem together.
00:11 Remember, with negative exponents, we use the reciprocal for positive exponents.
00:16 We'll apply this to our exercise now.
00:20 First, write the reciprocal, which is 1 divided by the number.
00:24 Next, raise it to the positive exponent.
00:28 To handle an exponent over a product, let's open the parentheses.
00:32 Raise each factor inside to the given exponent.
00:36 Watch as each factor is raised to the power.
00:41 Are you following along? Great job!
00:48 And that's how we solve it!

Step-by-step written solution

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1

Understand the problem

Insert the corresponding expression:

(5×6×8)9= \left(5\times6\times8\right)^{-9}=

2

Step-by-step solution

Let's solve the problem step-by-step to find the value of (5×6×8)9 (5 \times 6 \times 8)^{-9} .

Step 1: Recognize that the expression (5×6×8)9(5 \times 6 \times 8)^{-9} has a negative exponent. According to the negative exponent rule ab=1aba^{-b} = \frac{1}{a^b}, we can write:

(5×6×8)9=1(5×6×8)9(5 \times 6 \times 8)^{-9} = \frac{1}{(5 \times 6 \times 8)^9}

Step 2: Next, apply the power of a product rule. This rule states that (xyz)n=xn×yn×zn(xyz)^n = x^n \times y^n \times z^n. Therefore, apply this to (5×6×8)9(5 \times 6 \times 8)^9:

(5×6×8)9=59×69×89(5 \times 6 \times 8)^9 = 5^9 \times 6^9 \times 8^9

Step 3: Substitute back into the fraction obtained in Step 1:

1(5×6×8)9=159×69×89\frac{1}{(5 \times 6 \times 8)^9} = \frac{1}{5^9 \times 6^9 \times 8^9}

This result is the fully simplified expression sought for the original problem.

Therefore, the expression (5×6×8)9 (5 \times 6 \times 8)^{-9} simplifies to 159×69×89\frac{1}{5^9 \times 6^9 \times 8^9}.

3

Final Answer

159×69×89 \frac{1}{5^9\times6^9\times8^9}

Practice Quiz

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

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