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daryas01
@daryas01
August 2022
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при каких значениях x выражения x^4+0.2x^3-0.35x^2 равно нулю ?
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kmike21
Verified answer
X⁴+0,2x³-0,35x²=0
x²(x²+0,2x-0,35)=0
x=0
x²+0,2x-0,35=0
D=0,2²+4*0,35=1,44
√D=1,2
x₁=(-0,2-1,2)/2=-1,4/2=-0,7
x₂=(-0,2+1,2)/2=1/2=0,5
Ответ: 0, -0,7 и 0,5
3 votes
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Answers & Comments
Verified answer
X⁴+0,2x³-0,35x²=0x²(x²+0,2x-0,35)=0
x=0
x²+0,2x-0,35=0
D=0,2²+4*0,35=1,44
√D=1,2
x₁=(-0,2-1,2)/2=-1,4/2=-0,7
x₂=(-0,2+1,2)/2=1/2=0,5
Ответ: 0, -0,7 и 0,5