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Nastyaninisvn
@Nastyaninisvn
July 2022
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Решите неравенства:
X^2-4больше или равно 0
4x^2+2x<0(помогите пожалуйста)
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Verified answer
1) x² - 4 ≥ 0
(x - 2)(x + 2) ≥ 0
+ - +
________________________
- 2 2
x ∈ ( - ∞; - 2]∪[2 ; + ∞)
2) 4x² + 2x < 0
Разделим обе части на 4:
+ - +
_______________________________
x ∈ ( -
;
)
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Nastyaninisvn
Спасибо большое)
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Answers & Comments
Verified answer
1) x² - 4 ≥ 0(x - 2)(x + 2) ≥ 0
+ - +
________________________
- 2 2
x ∈ ( - ∞; - 2]∪[2 ; + ∞)
2) 4x² + 2x < 0
Разделим обе части на 4:
+ - +
_______________________________
x ∈ ( -