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alino4ka199713
@alino4ka199713
July 2022
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найдите координаты вершины параболы: у=(х-1)^2-4
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lidusya13
У=х^2-2х+1-4=х^2-2х-3;
m=-b/2a=2/2=1;
n=1-2-3=-4;
(1;-4)-вершина
1 votes
Thanks 2
shaxzodmurtaza
(x-1)²-4=y x²-2x-3=y
a=1>0⇒ветви пар. ∧
y=0
x²-2x-3=0
x₁+x₂=2 x₁=-3
x₁*x₂=-3 x₂=-1
x∈(-3;-1)
0 votes
Thanks 2
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Answers & Comments
m=-b/2a=2/2=1;
n=1-2-3=-4;
(1;-4)-вершина
a=1>0⇒ветви пар. ∧
y=0
x²-2x-3=0
x₁+x₂=2 x₁=-3
x₁*x₂=-3 x₂=-1
x∈(-3;-1)