disequazioni e intervalli
Quiz
•
Mathematics
•
4th Grade
•
Practice Problem
•
Hard
Ilaria Evangelisti
Used 19+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Qual è l'intervallo risolutivo per la seguente disequazione: x2-4x-5>0 ?
x<-1 or x>5
x<-5 or x>1
-1<x<5
-5<x<1
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
x2 - 16 < 0
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
- 10x2 + 5x < 0
0<x<1/2
x<1/2
x<0 ∪ x>1/2
-1/2<x<0
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quale delle equazioni seguenti ha come soluzione x<-4 ∪ x>6?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bisogna risolvere 20-x-5>0. In quale passo c'è un errore?
passo 1: -x>-15
passo 2: x>15
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Inserisci il simbolo opportuno al posto del ₻ :
x2-9....₻0 ↔x≤-3∪x≥3
<
>
≤
≥
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Inserisci il simbolo opportuno al posto del ₻ :
x2-4...₻0 ↔-2<x<2
<
>
≤
≥
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