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милашечка24
@милашечка24
August 2021
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IrkaShevko
Verified answer
1) 3,6 * 1,5 * 0,01 = 0,054
2) 5x + 3 > 0
5x > -3
x > -0,6
3) -4 < 8 -3x < 5
-12 < -3x < -3
3 < 3x < 12
1 < x < 4
наименьшее: 2
наибольшее: 3
4) x² + 2x - 48 < 0
D = 4 + 192 = 196
x1 = (-2-14)/2 = -8
x2 = (-2 + 14)/2 = 6
x∈(-8; 6)
5) x² - x - 6 < 0
D = 1 + 24 = 25
x1 = (1-5)/2 = -2
x2 = (1+5)/2 = 3
-2 < x < 3
целые: -1; 0; 1; 2;
Ответ: 4
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Answers & Comments
Verified answer
1) 3,6 * 1,5 * 0,01 = 0,0542) 5x + 3 > 0
5x > -3
x > -0,6
3) -4 < 8 -3x < 5
-12 < -3x < -3
3 < 3x < 12
1 < x < 4
наименьшее: 2
наибольшее: 3
4) x² + 2x - 48 < 0
D = 4 + 192 = 196
x1 = (-2-14)/2 = -8
x2 = (-2 + 14)/2 = 6
x∈(-8; 6)
5) x² - x - 6 < 0
D = 1 + 24 = 25
x1 = (1-5)/2 = -2
x2 = (1+5)/2 = 3
-2 < x < 3
целые: -1; 0; 1; 2;
Ответ: 4