Question

4(x+y) whole square - 9(x-y) whole square

Answer 1

Answer:

-5x² -5y² + 26xy

Step-by-step explanation:

= 4(x + y)² - 9(x + y)²

= 4(x² + y² + 2xy) - 9(x² + y² -2xy)

= 4x² + 4y² + 8xy - 9x² - 9y² + 18xy

= -5x² -5y² + 26xy

this is the final answer hope this will help you