Odpowiedź:
(a + b)² = a² + 2ab + b²
1. (x + 1)² = x² + 2x + 1
2. (a + 11b)² = a² + 22ab + 121b²
3. (5x + 3/5)² = 25x² + 6x + 9/25
4. (2 1/2m + 6)² = (5/2m + 6)² = 25/4m² + 5*6m + 36 = 6 1/4m² + 30m + 36
5. (3√7 + 2)² = 9*7 + 12√7 + 4 = 63 + 12√7 + 4 = 67 + 12√7
6. (3y - 3z)² = 9y² - 18yz + 9z²
7. (x - 3/8)² = x² - 3/4x + 9/64
8. (a - 9)² = a² - 18a + 81
9. (6x - √5)² = 36x² - 12√5x + 5
10. (1 - 4√2)² = 1 - 8√2 + 16*2 = 1 - 8√2 + 32 = 33 - 8√2
Szczegółowe wyjaśnienie:
