Question

3x^2-8x-11=0 решите квадратное уравнение

Answer 1

3x²-8x-11=0

D= 64+4*3*11 = 64+132=196 = 14²

x(1) = (8+14) / 6 = 22/6 = 11/3 = 3_2/3

x(2) =(8-14) / 6 = -6 / 6= -1