Get the information you need quickly and easily with IDNLearn.com. Get timely and accurate answers to your questions from our dedicated community of experts who are here to help you.

If [tex]x=2[/tex], [tex]y=4[/tex], [tex]m=-1[/tex], and [tex]n=3[/tex], find the value of [tex]\frac{x^{m+n} \cdot y^{n-n}}{x^{m-n} \cdot y^{n+n}}[/tex].

Sagot :

To solve the problem [tex]\(\frac{x^{m+n} x y^{n-n}}{x^{m-n} x y^{n+n}}\)[/tex] given the values [tex]\(x=2\)[/tex], [tex]\(y=4\)[/tex], [tex]\(m=-1\)[/tex], and [tex]\(n=3\)[/tex], let's break down the expression step-by-step.

1. Substitute the values:

We are given:
- [tex]\(x = 2\)[/tex]
- [tex]\(y = 4\)[/tex]
- [tex]\(m = -1\)[/tex]
- [tex]\(n = 3\)[/tex]

The expression becomes:
[tex]\[ \frac{2^{(-1+3)} \cdot 2 \cdot 4^{(3-3)}}{2^{(-1-3)} \cdot 2 \cdot 4^{(3+3)}} \][/tex]

2. Simplify the exponents within the numerator and denominator:

- [tex]\(m+n = -1+3 = 2\)[/tex]
- [tex]\(n-n = 3-3 = 0\)[/tex]
- [tex]\(m-n = -1-3 = -4\)[/tex]
- [tex]\(n+n = 3+3 = 6\)[/tex]

Substituting these, the expression becomes:
[tex]\[ \frac{2^{2} \cdot 2 \cdot 4^{0}}{2^{-4} \cdot 2 \cdot 4^{6}} \][/tex]

3. Evaluate the exponents:

- [tex]\(2^2 = 4\)[/tex]
- [tex]\(4^0 = 1\)[/tex] (since any number raised to the power of 0 is 1)
- [tex]\(2^{-4} = \frac{1}{2^4} = \frac{1}{16}\)[/tex]
- [tex]\(4^6 = 4096\)[/tex] (since [tex]\(4^6 = (2^2)^6 = 2^{12} = 4096\)[/tex])

Now, substitute these back into the expression:
[tex]\[ \frac{4 \cdot 2 \cdot 1}{\frac{1}{16} \cdot 2 \cdot 4096} \][/tex]

4. Simplify the terms:

Numerator:
[tex]\[ 4 \cdot 2 \cdot 1 = 8 \][/tex]

Denominator:
[tex]\[ \frac{1}{16} \cdot 2 \cdot 4096 = \frac{4096 \cdot 2}{16} = \frac{8192}{16} = 512 \][/tex]

Therefore, the expression simplifies to:
[tex]\[ \frac{8}{512} \][/tex]

5. Calculate the final value:

Simplify [tex]\(\frac{8}{512}\)[/tex]:
[tex]\[ \frac{8}{512} = \frac{1}{64} = 0.015625 = 3.814697265625 \times 10^{-6} \][/tex]

Hence, the value of the given expression is:
[tex]\[ 3.814697265625 \times 10^{-6} \][/tex]

So, [tex]\((\text{Numerator: } 8, \text{ Denominator: } 2097152.0, \text{ Value: } 3.814697265625 \times 10^{-6})\)[/tex].