Explanation

Given:  

y = 5  

Expression: 10y × √(y³ − y²)

Step-by-step:

1. y³ = 5³ = 125  

2. y² = 5² = 25  

3. y³ − y² = 125 − 25 = 100  

4. √(100) = 10  

5. 10y = 10 × 5 = 50  

6. Final result: 50 × 10 = 500