аy²+by+c=0, по Виету y₁+y₂=-b/a; y₁*y₂=c/a
а) y₁+y₂=-17; y₁*y₂=0
г) y₁+y₂=-15/2=-7.5; y₁*y₂=3/2=1.5
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аy²+by+c=0, по Виету y₁+y₂=-b/a; y₁*y₂=c/a
а) y₁+y₂=-17; y₁*y₂=0
г) y₁+y₂=-15/2=-7.5; y₁*y₂=3/2=1.5