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VII.19. Formule de calcul prescurtat

Rezolvati exercitiile mai intai pe caiet.

1. (a %2b 1) ² = #
a^2%2b2a%2b1, , ,
2.
a^2-4a%2b1, , ,
3. A %2b B = #
4a^2%2b4a%2b1, , ,
4. (3a - 2)² = #
9a^2-12a%2b4, , ,
5. A %2b B %2b C = #
9m²-30mn%2b25n², multiple choice questions , ,
6. A %2b B = #
7-formule de calcul prescurtat.JPG, , ,
7. A %2b B %2b C = #
5, , ,
8. A %2b B %2b C = #
25, , ,
9. M = #
56, , ,
10. P = #
2, , ,
11. (3m - 5n)² = #
15, , ,
12. (2a %2b1)² = #
37, , ,
13. P = #
1, , class web page ,
14. FORMULE DE CALCUL PRESCURTAT (a %2b b)² = a² %2b 2ab %2b b² (a - b)² = a² - 2ab %2b b² a² - b² = (a - b)(a %2b b) ATENTIE: pentru a tasta rezultatele cerute nu lasati spatii intre simboluri iar pentru puterea a² folositi simbolul ^ ex.: a²=a^2 m²=m^2 x²%2b5x-4=x^2%2b5x-4
2, , distance learning ,
15. A %2b B %2b C = #
-13, , ,
16. A %2b B %2b C = #
28, , ,
17. (a - 2)² = #
3, , ,