1 Zad. Korzystaj z wzorów: (a+b)²=a²+2*a*b+b² (a-b)²=a²-2*a*b+b² a²-b²=(a+b)*(a-b) Zadania: 17²= 34²= 19²= 27²-13²= 41²-29²= proszę o rozwiązanie

17² = (10+7)² = 100+140+49 = 240+49 = 289 34² = (30+4)² = 900+240+16 = 1140+16 = 1156 19² = (20-1)² = 400-40+1 = 360+1 = 361 27²-13² = (27+13)(27-13) = 40*14 = 560 41²-29² = (41+29)(41-29) = 70*12 = 840

17²= 17 * 17 = 289 34²= 34 * 34 = 1156 19²= 19 * 19 = 361 27²-13² = (27+13)(27-13) = 40*14 = 560 41²-29² = (41+29)(41-29) = 70*12 = 840