Quiz about DISEQUAZIONI DI 2 GRADO

Question 1

$$\left(x-2\right)^2\ge0$$

Accepted Answer

$$\forall x\in R$$

Answer

$$x
e2$$

Answer

impossibile

Answer

$$x\ge2$$

Question 2

$$\left(x-2\right)^2\le0$$

Accepted Answer

$$x=2$$

Answer

$$\forall x\in R$$

Answer

impossibile

Answer

$$x\le2$$

Question 3

$$\left(x-2\right)^2>0$$

Accepted Answer

$$x
e2$$

Answer

$$\forall x\in R$$

Answer

$$x=2$$

Answer

impossibile

Question 4

$$\left(x-2\right)^2<0$$

Accepted Answer

impossibile

Answer

$$\forall x\in R$$

Answer

$$x=2$$

Answer

$$x
e2$$

Question 5

$$x^2-4\ge0$$

Accepted Answer

$$x\le-2\ \vee\ x\ge2$$

Answer

$$\forall x\in R$$

Answer

impossibile

Answer

$$-2\le x\le2$$

Question 6

$$x^2-4\le0$$

Accepted Answer

$$-2\le x\le2$$

Answer

$$\forall x\in R$$

Answer

$$x\le-2\ \vee\ x\ge2$$

Answer

impossibile

Question 7

$$x^2+1\le0$$

Accepted Answer

impossibile

Answer

$$\forall x\in R$$

Answer

$$x=-1$$

Answer

$$-1\le x\le1$$

Question 8

$$x^2+1\ge0$$

Accepted Answer

$$\forall x\in R$$

Answer

$$x\le-1\ \vee\ x\ge1$$

Answer

impossibile

Answer

$$x=-1$$

Question 9

$$x^2+1>0$$

Accepted Answer

$$\forall x\in R$$

Answer

$$x<-1\ \vee\ x>1$$

Answer

impossibile

Answer

$$-1<x<1$$

Question 10

$$x^2+1<0$$

Accepted Answer

impossibile

Answer

$$\forall x\in R$$

Answer

$$x<-1\ \vee\ x>1$$

Answer

$$-1<x<1$$

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