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JulliVip
@JulliVip
November 2021
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Помогите решить!! Пожалуйста!Срочно!
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manyny06
Verified answer
Решение
1)x≥12 U x≠-1,x≠1
x∈[12;∞)
2)x+9≥0⇒x≥-9
-x²-7x+8≥0
x²+7x-8≤0
x1+x2=-7 U x1*x2=-8⇒x1=-8 U x2=1
+ _ +
___________________________
-8 1
-8≤x≤1 U x≥-9
x∈[-8;1]
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Answers & Comments
Verified answer
Решение1)x≥12 U x≠-1,x≠1
x∈[12;∞)
2)x+9≥0⇒x≥-9
-x²-7x+8≥0
x²+7x-8≤0
x1+x2=-7 U x1*x2=-8⇒x1=-8 U x2=1
+ _ +
___________________________
-8 1
-8≤x≤1 U x≥-9
x∈[-8;1]