4X ² – 5x - 13=0 secesnu : X, X 2-2(x, + Xe)
4x ² - 5x-13-01:4
X-1,25x-3,25=0
Do meepeeere Jeeema:
X1 + X2 = 1,25
X, • X q = -3,25
xs X2-2(X. +X 2 ) = – 3,25-2-1,25 = 1
= -3,25-2,5 -5,75
x²-5x+6=0
D=25-24=1
x₁=3
x₂=2
