Math Problem Statement

Simplify the mathematical expression \(\frac{3\sqrt{20}}{2\sqrt{8}}\).

Solution

The expression in the image you uploaded is:

32028\frac{3\sqrt{20}}{2\sqrt{8}}

Let's simplify this step by step:

Step 1: Simplify each square root.

  • 20=4×5=25\sqrt{20} = \sqrt{4 \times 5} = 2\sqrt{5}
  • 8=4×2=22\sqrt{8} = \sqrt{4 \times 2} = 2\sqrt{2}

Step 2: Substitute these into the original expression:

32028=3(25)2(22)=6542\frac{3\sqrt{20}}{2\sqrt{8}} = \frac{3(2\sqrt{5})}{2(2\sqrt{2})} = \frac{6\sqrt{5}}{4\sqrt{2}}

Step 3: Simplify the fraction.

6542=3522\frac{6\sqrt{5}}{4\sqrt{2}} = \frac{3\sqrt{5}}{2\sqrt{2}}

Step 4: Rationalize the denominator.

To remove the square root from the denominator, multiply both the numerator and the denominator by 2\sqrt{2}:

3522×22=3102×2=3104\frac{3\sqrt{5}}{2\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}} = \frac{3\sqrt{10}}{2 \times 2} = \frac{3\sqrt{10}}{4}

Final Answer:

3104\frac{3\sqrt{10}}{4}

Let me know if you need any further clarification or steps!

Would you like more practice with similar problems?

  1. Simplify: 512318\frac{5\sqrt{12}}{3\sqrt{18}}
  2. Simplify: 71553\frac{7\sqrt{15}}{5\sqrt{3}}
  3. Rationalize: 27\frac{2}{\sqrt{7}}
  4. Simplify: 6832\frac{6\sqrt{8}}{3\sqrt{2}}
  5. Simplify: 502\frac{\sqrt{50}}{\sqrt{2}}

Tip: When simplifying square roots, always look for perfect squares to factor out!

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Math Problem Analysis

Mathematical Concepts

Simplification of square roots
Fraction simplification
Rationalization of denominators

Formulas

\(\sqrt{a \cdot b} = \sqrt{a} \cdot \sqrt{b}\)
Rationalization: \(\frac{1}{\sqrt{b}} = \frac{\sqrt{b}}{b}\)

Theorems

Properties of square roots

Suitable Grade Level

Grades 8-10