Simplify the Expression: (√2 × √9 × √2)/(√3 × √4) Radical Fraction

Question

Solve the following exercise:

29234= \frac{\sqrt{2}\cdot\sqrt{9}\cdot\sqrt{2}}{\sqrt{3}\cdot\sqrt{4}}=

Video Solution

Solution Steps

00:00 Solve the following problem
00:04 Apply the commutative law and arrange the exercise
00:12 When multiplying the root of a number (A) by the root of another number (B)
00:16 The result equals the root of their product (A times B)
00:19 Apply this formula to our exercise and calculate the product
00:29 Reduce wherever possible
00:35 Break down 9 into factors of 3 and 3
00:40 Apply the formula again and separate one root into two
00:50 Reduce wherever possible
00:54 This is the solution

Step-by-Step Solution

Let's proceed to simplify the expression:

  • First, evaluate the numerator: 292\sqrt{2} \cdot \sqrt{9} \cdot \sqrt{2}. Using the property ab=ab\sqrt{a} \cdot \sqrt{b} = \sqrt{a \cdot b}, we simplify it: 292=36\sqrt{2 \cdot 9 \cdot 2} = \sqrt{36}.
  • 36\sqrt{36} simplifies to 6, as 36 is a perfect square.
  • Next, evaluate the denominator 34\sqrt{3} \cdot \sqrt{4}:
  • 34\sqrt{3} \cdot \sqrt{4} also applies the property ab=ab\sqrt{a} \cdot \sqrt{b} = \sqrt{a \cdot b}, simplifying to 12\sqrt{12}.
  • Since 12 is 4×34 \times 3, and 4=2\sqrt{4} = 2, 12\sqrt{12} simplifies to 232\sqrt{3}.
  • Now, the original expression becomes 623\frac{6}{2\sqrt{3}}.
  • Simplify 62\frac{6}{2} to get 62=3\frac{6}{2} = 3.
  • The entire expression now is 33\frac{3}{\sqrt{3}}.
  • To rationalize the expression 33\frac{3}{\sqrt{3}}, multiply both the numerator and the denominator by 3\sqrt{3}:
  • This becomes 3333=333=3\frac{3 \cdot \sqrt{3}}{\sqrt{3} \cdot \sqrt{3}} = \frac{3\sqrt{3}}{3} = \sqrt{3}

Therefore, the solution to the problem is 3\sqrt{3}.

Answer

3 \sqrt{3}