1. Simplify the following:
a) (4m + 5n)² + (5m + 4n)² + (4m + 5n) (4m - 5n)
Answers
Answered by
1
Answer:
48m² + 80mn + 25n²
Step-by-step explanation:
16m² + 40mn + 25n² + 16m² + 40mn + 25n² + 16m² - 25n²
48m² + 80mn + 50n² - 25n²
48m² + 80mn + 25n²
Similar questions