Ответ: q = -39
x²+px+q=0
x₁+x₂=-p
x₁*x₂=q
x²-7x+q=0, x₁=0.5
{0.5+x₂=-(-7) {x₂=7-0.5
0.5*x₂=q 6.5*(-6)=q
{x₂=-6.5
q=-39
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Ответ: q = -39
x²+px+q=0
теорема Виета:
x₁+x₂=-p
x₁*x₂=q
x²-7x+q=0, x₁=0.5
{0.5+x₂=-(-7) {x₂=7-0.5
0.5*x₂=q 6.5*(-6)=q
{x₂=-6.5
q=-39