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okknow
@okknow
July 2022
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помогите решить 21 и 23 задание
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Duranchelus
#21
4x²=21-x³
x³+4x²-21x=0
x(x²+4x-21)=0
x²+4x-21=0 x=0
D=16+48=64=8²
x₁=(-4-8)/2=-6
x₂=(-4+8)/2=2
Ответ: x=-6;0;2
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Answers & Comments
4x²=21-x³
x³+4x²-21x=0
x(x²+4x-21)=0
x²+4x-21=0 x=0
D=16+48=64=8²
x₁=(-4-8)/2=-6
x₂=(-4+8)/2=2
Ответ: x=-6;0;2