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ololo2510
@ololo2510
July 2022
1
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Решите уравнение:
1. 2x^2-6=0
2. 3x^2+5x=0
3. -7x^2=0
4. 3x^2-x-2=0
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Answers & Comments
русская25
1. 2x²
- 6=0
2x
²=6
x² = 3
x₁,₂= +- √3
ответ: +- √3.
2. 3x²+5x=0
х(3х+5)=0
х₁=0
х₂= -
ответ: -
; 0.
3. -7х²
=0
х=0
Ответ: 0.
4. 3x²
-x-2=0
D= 1+24= 25
x
₁= 1+5/6= 1
х₂= 1 -5 /6 =
Ответ:
- 2/3; 1.
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Answers & Comments
2x²=6
x² = 3
x₁,₂= +- √3
ответ: +- √3.
2. 3x²+5x=0
х(3х+5)=0
х₁=0
х₂= -
ответ: - ; 0.
3. -7х²=0
х=0
Ответ: 0.
4. 3x²-x-2=0
D= 1+24= 25
x₁= 1+5/6= 1
х₂= 1 -5 /6 =
Ответ: - 2/3; 1.