Объяснение:
1) 2х²+х+2=0
D<0
2)2x²+x+2
3)D<0
4) x²+5x-6=0
D=1
x1= -5+1/2 = -2
x2= -5-1/2 = -3
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Объяснение:
1) 2х²+х+2=0
D<0
2)2x²+x+2
D<0
3)D<0
4) x²+5x-6=0
D=1
x1= -5+1/2 = -2
x2= -5-1/2 = -3