Question

Ajutor la ex 1 ajutor ajutor​

Answer 1

Răspuns:

b²-4ac= 6²-4*1*9=0

x=6-0/1*2=3

x²+x+4=0

1²-4*1*4=16

X1=-1-√16/2*1=-5/2

X2=-1+√16/2*1=3/2

-5x²+2x-1=0

2²-4*-5*-1=25

X1=-2-√25/2*5=12/10

X2=-2+√25/2*5=1