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scomposizioni 2

Authored by Isabella Eutizi

Mathematics

9th Grade

19 Questions

Used 32+ times

scomposizioni 2
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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x2+6x+5x^2+6x+5  

 (x5)(x1)\left(x-5\right)\cdot\left(x-1\right)  

 (x+5)(x+1)\left(x+5\right)\cdot\left(x+1\right)  

 (x1)(x+5)\left(x-1\right)\cdot\left(x+5\right)  

 (x+1)(x5)\left(x+1\right)\cdot\left(x-5\right)  

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

scomponi il seguente polinomio
 ax+bx3a3bax+bx-3a-3b  

 (a+3)(a+b)\left(a+3\right)\cdot\left(a+b\right)  

 (a+b)(x+3)\left(a+b\right)\cdot\left(x+3\right)  

 (ab)(x3)\left(a-b\right)\cdot\left(x-3\right)  

 (a+b)(x3)\left(a+b\right)\cdot\left(x-3\right)  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 ax+2bx +ay+2by =ax+2bx\ +ay+2by\ =  

 (a+2x)(b+2y)\left(a+2x\right)\left(b+2y\right)  

 (a+b)(2x+y)(a+b)(2x+y)  

 (ax+ay)[2b(x+y)](ax+ay)[2b(x+y)]  

 (a+2b)(x+y)(a+2b)(x+y)  

 a(x+2b+y+2by)a(x+2b+y+2by)  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual è la corretta scomposizione in fattori di (49x2 94y2)\left(\frac{4}{9}x^2−\ \frac{9}{4}y^2\right)  

 (49x  94y)(49x+94y)\left(\frac{4}{9}x\ −\ \frac{9}{4}y\right)\left(\frac{4}{9}x+\frac{9}{4}y\right)  

 49(xy)(x+y)\frac{4}{9}(x−y)(x+y)  

 (23x  32y)(23x+32y)\left(\frac{2}{3}x\ −\ \frac{3}{2}y\right)\left(\frac{2}{3}x+\frac{3}{2}y\right)  

 14(2x+3x)(2x3y)\frac{1}{4}(2x+3x)(2x−3y)  

 (23x 32y)2 \left(\frac{2}{3}x−\ \frac{3}{2}y\right)^{2\ }  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Scomponi in fattori

 x3xa2x^3-xa^2  

 (x2a)(x2+a)(x^2−a)(x^2+a)  

 x2(xa)(x+a)x^2(x−a)(x+a)  

 x(xa)(x+a)x(x−a)(x+a)  

 x(x2+a2)x\left(x^2+a^2\right)  

 (a2x2)(a+x)\left(a^2−x^2\right)\left(a+x\right)  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual è la scomposizione completa di 16x4-81

(4x2+9)(4x2+9)

(2x+3)2(2x-3)2

(2x+3)(2x-3)(4x2+9)

(2x+3)(2x-3)(4x2-9)

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Tra i seguenti polinomi solo uno è lo sviluppo di un quadrato di binomio. Quale?

x 2 + x - 1

x 2 +4 x +2

9x 2 + 6x - 1

4x 2 - 12x +9

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