Question

5 _ корень 18 * корень 98 7

Answer 1

$\frac{5}{7} \sqrt{18} \cdot \sqrt{98} = \frac{5}{7} \cdot3 \sqrt{2} \cdot 7\sqrt{2} =15 \cdot 2 =30$

Answer 2

To simplify the given expression, let's break it down step by step:

Step 1: Simplify the square roots The square root of 18 can be simplified as follows: √18 = √(9 × 2) = √9 × √2 = 3√2

The square root of 98 can be simplified as follows: √98 = √(49 × 2) = √49 × √2 = 7√2

After simplifying the square roots, the expression becomes: 5 × 3√2 × 7√2 × 7

Step 2: Multiply the numbers 5 × 3 × 7 × 7 = 735

Step 3: Multiply the square roots √2 × √2 = 2

Step 4: Final answer Putting it all together, the expression simplifies to: 735 × 2 = 1470