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милашечка24
@милашечка24
August 2022
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IrkaShevko
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1. x² - 25x ≥ 0
x(x - 25) ≥ 0
x ≤ 0 или x ≥ 25
ответ: (-∞; 0] U [25; +∞)
2. 3x² + 7x - 6 < 0
D = 49 + 72 = 121
x1 = (-7-11)/6 = -3
x2 = (-7 + 11)/6 = 2/3
Ответ: (-3; 2/3)
3. 35,761 ≈ 36 (т.к. 7 > 5)
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manyny06
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Решение смотри на фотографии
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Answers & Comments
Verified answer
1. x² - 25x ≥ 0x(x - 25) ≥ 0
x ≤ 0 или x ≥ 25
ответ: (-∞; 0] U [25; +∞)
2. 3x² + 7x - 6 < 0
D = 49 + 72 = 121
x1 = (-7-11)/6 = -3
x2 = (-7 + 11)/6 = 2/3
Ответ: (-3; 2/3)
3. 35,761 ≈ 36 (т.к. 7 > 5)
Verified answer
Решение смотри на фотографии