Math Problem Statement

2√5×(3√5+2)

Solution

We are solving the expression:

25×(35+2)2\sqrt{5} \times (3\sqrt{5} + 2)

Step 1: Apply the distributive property

Distribute 252\sqrt{5} to each term inside the parentheses:

25×35+25×22\sqrt{5} \times 3\sqrt{5} + 2\sqrt{5} \times 2

Step 2: Simplify each term

  1. Simplify 25×352\sqrt{5} \times 3\sqrt{5}:

    • Multiply the coefficients: 2×3=62 \times 3 = 6
    • Multiply the square roots: 5×5=5\sqrt{5} \times \sqrt{5} = 5
    • Combine: 6×5=306 \times 5 = 30
  2. Simplify 25×22\sqrt{5} \times 2:

    • Multiply the coefficients: 2×2=42 \times 2 = 4
    • Retain the square root: 454\sqrt{5}

Step 3: Combine results

30+4530 + 4\sqrt{5}

Final Answer:

30+45\boxed{30 + 4\sqrt{5}}

Would you like further clarification or an alternative explanation? Here are some related questions:

  1. How does the distributive property work in algebra?
  2. Why does 5×5\sqrt{5} \times \sqrt{5} equal 5?
  3. How do you simplify expressions involving square roots?
  4. What are common mistakes when working with square root expressions?
  5. Can we approximate the decimal value of 30+4530 + 4\sqrt{5}?

Tip: Always simplify square roots before multiplying to reduce complexity in calculations!

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Math Problem Analysis

Mathematical Concepts

Algebra
Distributive Property
Square Roots

Formulas

Distributive Property: a(b + c) = ab + ac
Multiplying Square Roots: √a × √a = a

Theorems

Distributive Property
Multiplication of Square Roots

Suitable Grade Level

Grades 8-10