Quiz about Equazioni di grado superiore al secondo

Question 1

Risolvi la seguente equazione:

$$x^3+27=0$$

Accepted Answer

$$S=\left\{-3\right\}$$

Answer

$$S=\left\{3\right\}$$

Answer

$$S=\left\{9\right\}$$

Answer

Impossibile

Question 2

Risolvi la seguente equazione:

$$36x^2-81=0$$

Accepted Answer

$$S=\left\{\frac{3}{2};-\frac{3}{2}\right\}$$

Answer

$$S=\left\{\frac{3}{2}\right\}$$

Answer

$$S=\left\{-\frac{2}{3};\frac{2}{3}\right\}$$

Answer

Impossibile

Question 3

Risolvi la seguente equazione

$$9x^4+1=0$$

Accepted Answer

Impossibile

Answer

$$S=\left\{-\frac{1}{3}\right\}$$

Answer

$$S=\left\{\frac{1}{3}\right\}$$

Answer

$$S=\left\{-3\right\}$$

Question 4

Risolvi la seguente equazione

$$9x^4-8x^2-1=0$$

Accepted Answer

$$S=\left\{\pm1\right\}$$

Answer

$$S=\left\{1,\ \sqrt[]{2}\right\}$$

Answer

$$S=\left\{1\right\}$$

Answer

$$S=\left\{\pm\sqrt[]{2}\right\}$$

Question 5

Risolvi la seguente equazione

$$x^4-5x^2+4=0$$

Accepted Answer

$$S=\left\{\pm1,\pm2\right\}$$

Answer

$$S=\left\{\pm1\right\}$$

Answer

$$S=\left\{\pm2\right\}$$

Answer

$$S=\left\{1,2\right\}$$

Question 6

Risolvi la seguente equazione

$$8x^6-7x^3-1=0$$

Accepted Answer

$$S=\left\{1,-\frac{1}{2}\right\}$$

Answer

$$S=\left\{\pm1\right\}$$

Answer

$$S=\left\{1;\frac{1}{2}\right\}$$

Answer

$$S=\left\{-1;-\frac{1}{2}\right\}$$

Question 7

Risolvi la seguente equazione

$$x^3-7x^2+12x=0$$

Accepted Answer

$$S=\left\{0;3;4\right\}$$

Answer

$$S=\left\{0;3;-4\right\}$$

Answer

$$S=\left\{0;-3;4\right\}$$

Answer

impossibile

Question 8

Risolvi la seguente equazione

$$x^3+3x^2+3x+1=0$$

Accepted Answer

$$S=\left\{-1\right\}$$

Answer

$$S=\left\{\pm1\right\}$$

Answer

$$S=\left\{1\right\}$$

Answer

impossibile

Question 9

Risolvi la seguente equazione

$$3x^4-3x^3-12x^2+12x=0$$

Accepted Answer

$$S=\left\{0,1,\pm2\right\}$$

Answer

$$S=\left\{0,\pm1\right\}$$

Answer

$$S=\left\{0,\pm2\right\}$$

Answer

Nessuna delle precedenti

Question 10

Risolvi la seguente equazione

$$2x^4+3x^3-5x^2=0$$

Accepted Answer

$$S=\left\{-\frac{5}{2};0;1\right\}\ $$

Answer

$$S=\left\{-\frac{5}{2};0\right\}\ $$

Answer

$$S=\left\{-\frac{5}{2};1;2\right\}\ $$

Answer

Nessuna delle precedenti

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