←Vrati se na zadatke1. Zadatak
Riješi jednadžbu
(0.8x−21)2+(53x−1.3)2=4⋅(21x−0.7)(0.7+0.5x)−6(0.15x+252).Rješenje
x2−2.36x+1.941.46xx0.64x2−0.8x+0.25+0.36x2−1.56x+1.69=4⋅((0.5x)2−0.72)−0.9x−0.48=x2−1.96−0.9x−0.48=4.38=3 Pomakni formulu lijevo ili desno.