Question

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Answer 1

Explicație pas cu pas:

Gf n Ox => f(x)=0=> x²+3x+2=0

notez : □-delta

□=b²-4ac=9-8=1 => □>0

x1= (-b+□)/2=(-3+1)/2=-2/2=-1

x2=(-b-□)/2=(-3-1)/2=-4/2=-2

=>Gf n Ox={A(-1,0);B(-2,0)}