Math Problem Statement

Write the expression \( \sqrt{x} \cdot \sqrt[5]{x} \) in the form \( c \cdot x^n \), where c is a constant and n is a rational number.

Solution

The problem asks you to rewrite the expression xx5\sqrt{x} \cdot \sqrt[5]{x} in the form cxnc \cdot x^n, where cc is a constant and nn is a rational number.

Let's solve this step by step:

  1. Recall that x=x1/2\sqrt{x} = x^{1/2} and x5=x1/5\sqrt[5]{x} = x^{1/5}. So the expression becomes: x1/2x1/5x^{1/2} \cdot x^{1/5}

  2. When multiplying powers of the same base, we add the exponents: x1/2x1/5=x1/2+1/5x^{1/2} \cdot x^{1/5} = x^{1/2 + 1/5}

  3. To add these fractions, find a common denominator: 1/2+1/5=510+210=7101/2 + 1/5 = \frac{5}{10} + \frac{2}{10} = \frac{7}{10}

  4. So the expression becomes: x7/10x^{7/10}

Since there is no constant other than 1, the expression in the form cxnc \cdot x^n is:

1x7/10or justx7/101 \cdot x^{7/10} \quad \text{or just} \quad x^{7/10}

Would you like further details or have any questions?


Here are 5 related questions for practice:

  1. How would you rewrite x23x\sqrt[3]{x^2} \cdot \sqrt{x} in the form cxnc \cdot x^n?
  2. What is the value of x1/4x1/2x^{1/4} \cdot x^{1/2}?
  3. How do you express x36x\sqrt[6]{x^3} \cdot \sqrt{x} in the form xnx^n?
  4. If axn1bxn2=cxna \cdot x^{n_1} \cdot b \cdot x^{n_2} = c \cdot x^n, how do you determine nn?
  5. How do you express x3x54\sqrt{x^3} \cdot \sqrt[4]{x^5} in exponential form?

Tip: When multiplying expressions with the same base, adding the exponents simplifies the problem quickly!

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Math Problem Analysis

Mathematical Concepts

Exponents
Radicals
Rational Exponents

Formulas

\( \sqrt{x} = x^{1/2} \)
\( \sqrt[5]{x} = x^{1/5} \)
Adding exponents with the same base: \( a^m \cdot a^n = a^{m+n} \)

Theorems

Laws of Exponents

Suitable Grade Level

High School (Grades 9-12)