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4ev43yi3
@4ev43yi3
July 2022
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х(в 4 степень )+2Х(В КВАДРАТЕ)-8=0
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andrisd
Verified answer
X⁴+2x²-8=0
x²=t
t²+2t-8=0
D=4-4*(-8)=36
t₁=(-2+6)/2=2
t₂=(-2-6)/2=-4 (не подходит)
x₁=√2
x₂=-√2
4 votes
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Answers & Comments
Verified answer
X⁴+2x²-8=0x²=t
t²+2t-8=0
D=4-4*(-8)=36
t₁=(-2+6)/2=2
t₂=(-2-6)/2=-4 (не подходит)
x₁=√2
x₂=-√2