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Dinochka8
@Dinochka8
June 2022
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Решите неравенство:
x^2 + 2x + 2 > 0;
x^2 - 8x + 16 > 0.
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Львенок99
X^2+2x+2>0
x^2-8x+16>0
1) X^2+2x+2>0
x^2+2x+2=0
D=4+12=16
x1=2-4/2=-1
x2=2+4/2=3
2) X^2-8x+16>0
X^2-8x+16=0
D=64-64=0, т.к D=0
Ответ:(-1,3)
Думаю так.
5 votes
Thanks 5
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Answers & Comments
x^2-8x+16>0
1) X^2+2x+2>0
x^2+2x+2=0
D=4+12=16
x1=2-4/2=-1
x2=2+4/2=3
2) X^2-8x+16>0
X^2-8x+16=0
D=64-64=0, т.к D=0
Ответ:(-1,3)
Думаю так.