July 2023 1 5 Report
Il Completa las siguientes igualdades:

1. (a + b)(a -__) = a²- b²

2. (a + b)² = a²+ ___+ b²

3. (x + 3) (x - 5) = x² -___ -15

4. (x + 3) (x + 5) = x² + ___+15

5. (x + 3)² = x² +__ +9

6. (a +___)² = a² + 6a + 9 ​

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