January 2023 1 14 Report
1.- Realizar los siguientes ejercicios de diferencia de cuadrados perfectos.

1. ( x + y )²- a²

2. 4 - ( a + 1 )²

3. 9 - ( m + n )²

4. ( m - n )² - 16

5. ( x - y )² - 4z²

6. ( a + 2b)² - 1

7. 1 - ( x - 2y )²

8. ( x + 2a)² - 4x²

9. ( a + b )²- ( c + d )²

10. ( a - b )²- ( c - d )²

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