Simplify. Write your answers without exponents.

[tex]\[ 4^{-\frac{3}{2}} = \square \][/tex]

[tex]\[ \left(\frac{1}{16}\right)^{-\frac{5}{4}} = \square \][/tex]



Answer :

Sure! Let's go through the process of simplifying each expression step-by-step.

### Simplifying [tex]\(4^{-\frac{3}{2}}\)[/tex]

1. Understanding the exponent: The exponent [tex]\(-\frac{3}{2}\)[/tex] can be broken into the product of two separate exponents.
[tex]\[ 4^{-\frac{3}{2}} = \left(4^{\frac{1}{2}}\right)^{-3} \][/tex]

2. Calculate the first step: [tex]\(4^{\frac{1}{2}}\)[/tex] is equivalent to the square root of 4.
[tex]\[ 4^{\frac{1}{2}} = \sqrt{4} = 2 \][/tex]

3. Apply the negative exponent: Now raise 2 to the power of [tex]\(-3\)[/tex].
[tex]\[ \left(2\right)^{-3} = \frac{1}{2^3} = \frac{1}{8} \][/tex]

Thus, we have:
[tex]\[ 4^{-\frac{3}{2}} = 0.125 \][/tex]

### Simplifying [tex]\(\left(\frac{1}{16}\right)^{-\frac{5}{4}}\)[/tex]

1. Understanding the base and exponent: The negative exponent indicates a reciprocal. So:
[tex]\[ \left(\frac{1}{16}\right)^{-\frac{5}{4}} = 16^{\frac{5}{4}} \][/tex]

2. Breaking down the exponent: The exponent [tex]\(\frac{5}{4}\)[/tex] can be written as [tex]\(1.25\)[/tex], which is also [tex]\(\left(16^{\frac{1}{4}}\right)^5\)[/tex].

3. Calculate intermediate steps: First, find [tex]\(16^{\frac{1}{4}}\)[/tex].
[tex]\[ 16^{\frac{1}{4}} = \sqrt[4]{16} = 2 \][/tex]
Since [tex]\(2^4 = 16\)[/tex].

4. Raise the intermediate result to the power of 5:
[tex]\[ 2^5 = 32 \][/tex]

Thus, we have:
[tex]\[ \left(\frac{1}{16}\right)^{-\frac{5}{4}} = 32.0 \][/tex]

So, the simplified forms of the given expressions are:
[tex]\[ 4^{-\frac{3}{2}} = 0.125 \][/tex]
[tex]\[ \left(\frac{1}{16}\right)^{-\frac{5}{4}} = 32.0 \][/tex]