Resuelve aplicando el cuadrado:
1. (a-3)²
2. (2a+5)²
3. (5a-6b)
4. (8a-3)²
5. (7a²c+2d)²
6. (14abc-2d)²
7. (15a²b²-16ab³)
1. (a-3)²
2. (2a+5)²
3. (5a-6b)
4. (8a-3)²
5. (7a²c+2d)²
6. (14abc-2d)²
7. (15a²b²-16ab³)
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