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katya100916
@katya100916
July 2022
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Y=x3+2x2-x-2 найти нули функции
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Juliaa21
Verified answer
Y=x³+2x²-x-2
x³+2x²-x-2=0
(x³+2x²)-(x+2)=0
x²(x+2)-1(x+2)=0
(x²-1)(x+2)=0
x²-1=0 x+2=0
x²=1 x=-2
x=+-1
Ответ: -2;-1;1
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Answers & Comments
Verified answer
Y=x³+2x²-x-2x³+2x²-x-2=0
(x³+2x²)-(x+2)=0
x²(x+2)-1(x+2)=0
(x²-1)(x+2)=0
x²-1=0 x+2=0
x²=1 x=-2
x=+-1
Ответ: -2;-1;1