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Which number is the same as for the power of negative 1 * 2 ^ 8 / 4 ^ -2

A) -2
B) 1/5
C) 2
D) 32
E) 512

User Peter Tran
by
4.7k points

2 Answers

4 votes

Answer: D) 32

Explanation:

To solve the expression (4 to the negative power of 1)(2 to the 3rd power divided by 4 to the negative power of 2), we can follow these steps:

Step 1: Simplify 4 to the negative power of 1

4 to the negative power of 1 can be written as 1/4 to the positive power of 1, so the expression becomes: (1/4)(2 to the 3rd power divided by 4 to the negative power of 2)

Step 2: Simplify the division of powers of 4

When dividing powers with the same base (in this case, 4), we can subtract the exponents. So, 4 to the negative power of 2 is the same as 1/4 to the power of 2, which equals 1/16. The expression now becomes: (1/4)(2 to the 3rd power divided by 1/16)

Step 3: Simplify 2 to the 3rd power 2 to the 3rd power is 2x2x2, which equals 8. The expression now becomes: (1/4)(8 divided by 1/16)

Step 4: Simplify the division

Dividing by a fraction is the same as multiplying by its reciprocal. So, we can rewrite the expression as: (1/4)(8 x 16)

Step 5: Multiply 8 x 16 equals 128, so the expression simplifies to: (1/4)(128)

Step 6: Simplify the final expression

Multiplying 1/4 by 128 gives us 32. Therefore, the final answer is: 32

User J Fritsch
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4.4k points
9 votes
B) 1/5.....................
User Don Miguel
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4.7k points