x₁ = -3
x₂ = 5
(x+3)(x-5) = 0
x₁+x₂= -b
x₁*x₂= c
-b = 2
b = -2
c = -15
Уравнение: x²-2x-15=0
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Answers & Comments
x₁ = -3
x₂ = 5
(x+3)(x-5) = 0
x₁+x₂= -b
x₁*x₂= c
-b = 2
b = -2
c = -15
Уравнение: x²-2x-15=0