5xкв+14x-3=0. dyrorhhfij

Question

5xкв+14x-3=0. dyrorhhfij

Answer 1

D=196+4*5*3=256
x1=-14+16/10=0,2
x2=-30/10=-3
Ответ: x1=0,2; x2=-3

Answer 2

5x² + 14x - 3 = 0
D = 14² + 3•5•4 = 196 + 60 = 256 = 16².
x1 = (-14 + 16)/10 = 2/10 = 0,2.
x2 = (-14 - 16)/10 = -30/10 = -3.
Ответ: х = 0,2; -3.