Odpowiedzi

2010-03-25T17:32:19+01:00
A1=-4
a2= x
a3= x+3/4

a3*a1= (a2)^2
(x+3/4)*-4=x^2
-4x-3=x^2
x^2+4x+3=0
(x+3)(x+1)=0
x=-3 lub x=-1
2010-03-25T17:35:39+01:00
-4, x, x+3/4
x:-4=x+3/4:x /*x
xdo kwadratu:-4=x+3/4 /*(-4)
x do kwadratu=-4x-3
x do kwadratu+4x+3=0
delta=4 do kwadratu-4*1*3
delta=16-12
delta=4
pierwiastek z delty=2
xjeden=-4-2/2=-3
x dwa=-4+2/2=-1