Quiz about Polinomi e primi prodotti notevoli

Question 1

(2a+5xy)+(7a-8xy)

Accepted Answer

9a-3xy

Answer

8a

Answer

6a-4xy

Answer

9a+3xy

Question 2

(3x-4y) (-2x)

Accepted Answer

-6x2+8xy

Answer

5x2+8xy

Answer

xy

Answer

0

Question 3

(9x⁴y³-12x³y+5xy²-3xy) : (-3xy)

Accepted Answer

-3x³y²+ 4 x²-5/3 y+1

Answer

3x3y2 -4x2-5/3y-1

Answer

x2y2+ 5/3y

Answer

5xy

Question 4

il polinomio 4a³ -5a²b+3ab²-abc

Accepted Answer

omogeneo

Answer

ordinato

Answer

disordinato

Answer

completo

Question 5

$$\left(3x-4\right)\left(2-5x\right)$$ (3 min)

Accepted Answer

26x -8 -15x²

Answer

5x- 8x²+8 - 9x

Answer

$$7x\cdot\left(-3x\right)$$

Answer

9x2-20 x

Question 6

Moltiplica (2x + 3)(x - 4).

Accepted Answer

$$2x^2-8x+3x-12$$

Answer

$$2x^2-8x+3x-16$$

Answer

$$2x^2-8x+3x-4$$

Answer

$$2x^2-8x+3x+12$$

Question 7

$$-3x\left(2x^2+4x\right)=$$

Accepted Answer

$$-6x^3-12x^2$$

Answer

$$-5x^2-12x$$

Answer

$$-6x^3+12x^2$$

Answer

$$-6x^2-12x$$

Question 8

Risolvi sul foglio e poi segna il risultato: $$[(4x^2–y^2)–(3x+y)(3x–y)]:(–3x^2)$$

Accepted Answer

$$\frac{5}{3}$$

Answer

$$\frac{1}{4}x^2+y$$

Answer

$$\frac{3}{4}xy$$

Answer

$$\frac{10}{3}x^2$$

Question 9

$$\left(3x+y\right)-\left(4x^2-5x-1\right)=$$

Accepted Answer

$$-4x^2+8x+y+1$$

Answer

$$4x^2-2x+y-1$$

Answer

$$8x+4x^2$$

Answer

$$1-y-2x+4x^2$$

Question 10

Il polinomio $$-[-(a^3-2a^2-3a+1)]$$ diventa:

Accepted Answer

$$a^3-2a^2-3a+1$$

Answer

$$-a^3+2a^2+3a-1$$

Answer

$$a^3+2a^2-3a-1$$

Answer

$$-a^3-2a^2+3a+1$$

Question 11

$$\left(2x-3\right)\cdot\left(3+2x\right)=$$

Accepted Answer

$$4x^2-9$$

Answer

$$6x-6x$$

Answer

$$4x^2-6$$

Answer

$$9-4x^2$$

Question 12

$$\left(x-4\right)^2=$$

Accepted Answer

$$x^2+16-8x$$

Answer

$$x^2-16$$

Answer

$$x^2+16$$

Answer

$$x^2-16-8x$$

Question 13

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

Accepted Answer

$$a^4-9$$

Answer

$$a^2\ -6$$

Answer

$$a^2-9$$

Answer

$$a^4-6$$

Question 14

$$\left(3x-4\right)\cdot\left(2-5x\right)$$

Accepted Answer

26x -8 -15x²

Answer

5x- 8x²+8 - 9x

Answer

7x.(-3x)

Answer

9x2-20 x

Question 15

$$\left(a-5\right)^2=\ $$

Accepted Answer

$$a^2\ -\ 10a\ +25$$

Answer

$$a^2-5a\ +25$$

Answer

$$a^2+10\ a\ -5$$

Answer

$$a\ -10a\ +5$$

Question 16

$$\left(5a-3y\right)\left(5a+3y\right)=$$

Accepted Answer

$$25a^2-9y^2$$

Answer

$$\left(5a-3y\right)^2$$

Answer

$$\left(5a+3y\right)^2$$

Answer

$$25a^2-9y^2-30ay$$

Question 17

$$\left(2x+\frac{1}{2}\right)\left(2x-\frac{1}{2}\right)=$$

Accepted Answer

$$4x^2-\frac{1}{4}$$

Answer

$$4x^2-2$$

Answer

$$x^2-4$$

Answer

$$2x^2-\frac{1}{2}$$

Question 18

$$\left(-x-1\right)^2=$$

Accepted Answer

$$x^2+2x+1$$

Answer

$$-x^2-2x-1$$

Answer

$$x^2-2x-1$$

Answer

$$x^2-2x+1$$

Question 19

Scrivi l'area della seguente figura sotto forma di POLINOMIO

Accepted Answer

$$4x^2-x-1$$

Answer

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

Answer

$$3x+2$$

Answer

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

Question 20

Scrivi l'area della parte gialla dell figura sotto forma POLINOMIO

Accepted Answer

$$5x^2+5x+1$$

Answer

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

Answer

$$4x^2-x-1$$

Answer

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

Question 21

Scrivi l'area della seguente figura sotto forma di POLINOMIO

Accepted Answer

$$x^2+6x-24$$

Answer

$$3x+2$$

Answer

$$4x^2-x-1$$

Answer

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

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