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Simplify [tex]\( \left(x^{\frac{2}{9}}\right)^{\frac{3}{8}} \)[/tex]:

A. [tex]\( x^{\frac{5}{17}} \)[/tex]
B. [tex]\( x^{\frac{1}{12}} \)[/tex]
C. [tex]\( x^{\frac{11}{72}} \)[/tex]
D. [tex]\( x^{\frac{43}{72}} \)[/tex]

Sagot :

Sure! Let's approach the problem step-by-step by simplifying and combining the given exponents.

### Step 1: Simplify the First Expression
We start with the first expression:

[tex]\[ \left(x^{\frac{2}{9}}\right)^{\frac{3}{8}} \][/tex]

Using the exponent power rule [tex]\((a^m)^n = a^{mn}\)[/tex], we multiply the exponents:

[tex]\[ \left(x^{\frac{2}{9}}\right)^{\frac{3}{8}} = x^{\left(\frac{2}{9} \cdot \frac{3}{8}\right)} \][/tex]

Calculate the exponent:

[tex]\[ \frac{2}{9} \cdot \frac{3}{8} = \frac{2 \times 3}{9 \times 8} = \frac{6}{72} = \frac{1}{12} \][/tex]

So,

[tex]\[ \left(x^{\frac{2}{9}}\right)^{\frac{3}{8}} = x^{\frac{1}{12}} \][/tex]

### Step 2: Combine All Expressions
Now, let's combine all the given expressions. We know from the simplified form of the first expression that:

[tex]\[ x^{\frac{1}{12}} \][/tex]

The given expressions are:

[tex]\[ x^{\frac{5}{17}}, \quad x^{\frac{1}{12}}, \quad x^{\frac{11}{72}}, \quad x^{\frac{43}{72}} \][/tex]

We need to combine these by adding their exponents.

### Step 3: Sum the Exponents
Let's list out all the exponents:

[tex]\[ \frac{1}{12}, \quad \frac{5}{17}, \quad \frac{1}{12}, \quad \frac{11}{72}, \quad \frac{43}{72} \][/tex]

Sum these exponents:

[tex]\[ \frac{1}{12} + \frac{5}{17} + \frac{1}{12} + \frac{11}{72} + \frac{43}{72} \][/tex]

Using the numerical results directly:

[tex]\[ \frac{1}{12} \approx 0.083333, \quad \frac{5}{17} \approx 0.294118, \quad \frac{1}{12} \approx 0.083333, \quad \frac{11}{72} \approx 0.152778, \quad \frac{43}{72} \approx 0.597222 \][/tex]

Add these values:

[tex]\[ 0.083333 + 0.294118 + 0.083333 + 0.152778 + 0.597222 = 1.210784 \][/tex]

Finally, since these are all exponents of [tex]\(x\)[/tex], we combine them under a single exponent:

[tex]\[ x^{1.210784} \][/tex]

Thus, after combining all the given expressions, we get:

[tex]\[ x^{1.210784} \][/tex]