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lilo112112
@lilo112112
November 2021
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решите неравенство
-ײ-3x+7>(x-1)²
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svetova
-х^2-3х+7-х^2+2х-1> 0
-2x^2-x+6> 0
D= 1+48=49
x1=(1+7)/-4=-2
x2=(1-7)/-4=1.5
____-2____1.5____》
отр пол отр
ответ (-2; 1.5)
2 votes
Thanks 1
lilo112112
Спасибо правильно!
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Answers & Comments
-2x^2-x+6> 0
D= 1+48=49
x1=(1+7)/-4=-2
x2=(1-7)/-4=1.5
____-2____1.5____》
отр пол отр
ответ (-2; 1.5)