Connect with knowledgeable individuals and find the best answers at IDNLearn.com. Our platform provides prompt, accurate answers from experts ready to assist you with any question you may have.

Evaluate the following expression:
[tex]\[
\frac{\left(1^{3/7} - 5/8\right) \times 2}{\frac{3}{4} + 1^{5/7} \div 4 \times 2^{1/3}}
\][/tex]


Sagot :

Sure, let's break this down step by step:

First, let's evaluate the numerator:
[tex]\[ \left(1^{\frac{3}{7}} - \frac{5}{8}\right) \times 2^{-1} \][/tex]

We know that any number raised to any power of 1 is just 1, so:
[tex]\[ 1^{\frac{3}{7}} = 1 \][/tex]

Now substitute back into the numerator expression:
[tex]\[ \left(1 - \frac{5}{8}\right) \times 2^{-1} \][/tex]

Now calculate [tex]\(1 - \frac{5}{8}\)[/tex]:
[tex]\[ 1 - \frac{5}{8} = \frac{8}{8} - \frac{5}{8} = \frac{3}{8} \][/tex]

Next, we need to calculate [tex]\(\frac{3}{8} \times 2^{-1}\)[/tex]. [tex]\(2^{-1}\)[/tex] is the same as [tex]\(\frac{1}{2}\)[/tex]:
[tex]\[ \frac{3}{8} \times \frac{1}{2} = \frac{3}{16} \][/tex]

So, the numerator evaluates to [tex]\(\frac{3}{16}\)[/tex].

Now let's move on to the denominator:
[tex]\[ \frac{3}{4} + 1^{\frac{5}{7}} \div 4 \times 2^{\frac{1}{3}} \][/tex]

As before, [tex]\(1^{\frac{5}{7}} = 1\)[/tex].

So now the expression becomes:
[tex]\[ \frac{3}{4} + \frac{1}{4} \times 2^{\frac{1}{3}} \][/tex]

Next, let's calculate [tex]\(2^{\frac{1}{3}}\)[/tex]. This is the cube root of 2, approximately [tex]\(1.25992\)[/tex].

Now multiply this value by [tex]\(\frac{1}{4}\)[/tex]:
[tex]\[ \frac{1}{4} \times 1.25992 \approx 0.31498 \][/tex]

Add this result to [tex]\(\frac{3}{4}\)[/tex]:
[tex]\[ \frac{3}{4} + 0.31498 = 0.75 + 0.31498 \approx 1.06498 \][/tex]

So, the denominator evaluates to approximately [tex]\(1.06498\)[/tex].

Finally, we need to divide the numerator by the denominator:
[tex]\[ \text{Numerator} = \frac{3}{16} \approx 0.1875 \][/tex]
[tex]\[ \text{Denominator} \approx 1.06498 \][/tex]

So:
[tex]\[ \frac{0.1875}{1.06498} \approx 0.17606 \][/tex]

Therefore, the evaluated expression is approximately [tex]\(0.17606\)[/tex].