Quiz about test su monomi e polinomi - cl. prime e cl. seconde(ripasso)

Question 1

La moltiplicazione $$\left(a+b\right)\left(a+c\right)$$ ha lo stesso risultato di

Accepted Answer

$$a\left(a+b\right)+c\left(a+b\right)$$

Answer

$$a^2-bc$$

Answer

$$a\left(a+c\right)+c\left(a+b\right)$$

Answer

$$a\left(a+b\right)+b\left(a+c\right)$$

Answer

$$a^2+bc$$

Question 2

Lo sviluppo dei quadrati $$\left(a+b\right)^2$$ e $$\left(-a-b\right)^2$$ fornisce due polinomi

Accepted Answer

Uguali

Answer

Opposti

Answer

Che hanno opposto solo il doppio prodotto

Answer

Che hanno opposto solo il quadrato di $$a$$

Answer

Che hanno opposti i quadrati di $$a$$ e $$b$$

Question 3

Dato il polinomio $$P\left(x\right)=-3x^2+5x-2$$ , i valori $$P\left(1\right)$$ e $$P\left(-1\right)$$ sono, rispettivamente

Accepted Answer

$$0$$ e $$-10$$

Answer

$$6$$ e $$-4$$

Answer

$$-2$$ e $$-10$$

Answer

$$-2$$ e $$-4$$

Question 4

Dato il polinomio $$P\left(x\right)=-3x^2+5x-2$$ , i valori $$P\left(\frac{1}{2}\right)$$ e $$P\left(-\frac{1}{2}\right)$$ sono, rispettivamente

Accepted Answer

$$-\frac{1}{4}$$ e $$-\frac{21}{4}$$

Answer

$$-\frac{2}{4}$$ e $$-\frac{10}{2}$$

Answer

$$-2$$ e $$3$$

Answer

$$-2$$ e $$-4$$

Answer

nessuna delle opzioni proposte

Question 5

Fra le seguenti spressioni indica quelle che sono monomi

Accepted Answer

$$\frac{1}{4}a^4$$

Accepted Answer

$$5a^0$$

Accepted Answer

$$7^{-1}bc$$

Answer

$$4xy^{-1}$$

Answer

$$3\left(a-c\right)$$

Question 6

Calcola $$\left(3x-2y^2\right)\left(-3x+2y^2\right)$$

Accepted Answer

$$-9x^2+12xy-4y^4$$

Answer

$$9x^2-12xy+4y^4$$

Answer

$$9x^2-4y^4$$

Answer

$$4y^4-9x^2$$

Question 7

$$\left(a-2\right)^2=\left(2-a\right)^2$$

Accepted Answer

VERO

Answer

FALSO

Question 8

$$\left(a^3+3\right)^2=a^9+9+6a^3$$

Accepted Answer

VERO

Answer

FALSO

Question 9

$$\left(3x+y\right)^2=9x^2+y^2$$

Accepted Answer

FALSO

Answer

VERO

Question 10

$$\left(2x+2z\right)^2=2\left(x+z\right)^2$$

Accepted Answer

FALSO

Answer

VERO

Question 11

$$-\left(2b-y\right)^2=\left(2b-y\right)\left(y-2b\right)$$

Accepted Answer

FALSO

Answer

VERO

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