Question

решите уравнение 3х^2-2х-5=0

Answer 1

3x^2 - 2x - 5 =  0
D = 4+4*5*3 - 4  +60 = 64 = 8^2
x1 = (2 + 8)/6 = 10/6 = 5/3;
x2 = ( 2 - 8)/6 = - 6/6 = - 1;