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I need help with these three problems i need the answers and help with them

I need help with these three problems i need the answers and help with them-example-1
User Seth Reno
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1 Answer

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9a. x>-2
9b. Never

10a. [0,∞) , X ≥ 0
10b. (-∞,1] , X ≤ 1

11 . I dont know the answer but I think there is no extreme Value
User Luviktor
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