Quiz about Diagnóstico Décimo

Question 1

Factorice

$$4-\left(a+1\right)^2$$

Accepted Answer

$$\left(a+3\right)\left(1-a\right)$$

Answer

$$\left(a-3\right)\left(1+a\right)$$

Answer

$$\left(a+2\right)\left(1-a\right)$$

Answer

$$\left(1-a\right)$$

Question 2

Factorice

$$\left(2x-3\right)^2-\left(x-5\right)^2$$

Accepted Answer

$$\left(x+2\right)\left(3x-8\right)$$

Answer

$$\left(x+2\right)\left(3x-25\right)$$

Answer

$$\left(x+2\right)\left(3x+8\right)$$

Answer

$$\left(x-2\right)\left(3x-8\right)$$

Question 3

$$60x^2+7xy-y^2$$ tiene como factores:

Accepted Answer

A. (12x-y)(5x+y)

Answer

B. (10x-y)(6x+y)

Answer

C. (15x+y)(4x-y)

Answer

D. (20x-y)(3x+y)

Question 4

$$x^2+10+7x$$ tiene como factores:

Accepted Answer

B. (x+5)(x+2)

Answer

A. (x-5)(x-2)

Answer

C. (x+10)(x+1)

Answer

D. (x-10)(x-1)

Question 5

$$18-27x+16y-24xy$$ tiene como factores:

Accepted Answer

(9+8y)(2-3x)

Answer

(9-8y)(2-3x)

Answer

(9-8y)(2+3x)

Answer

(9+8y)(2+3x)

Question 6

Cual es el valor de W

Accepted Answer

15

Answer

69

Answer

72

Answer

225

Question 7

Accepted Answer

48m

Answer

480m

Answer

4,8 m

Answer

0,48 m

Question 8

dividir

$$x^4-5x^3-10x^2+15x\ entre\ -5x$$

Accepted Answer

$$-\frac{1}{5}x^3+x^2+2x-3$$

Answer

$$5x^3+1x^2+2x+3$$

Answer

$$-5x^5+1x^4+2x^3-3x^2$$

Question 9

$$\left(7a^2x^3\right)\left(5ax\ -7b^3c^4\right)$$

Accepted Answer

$$35a^3x^4-49a^2b^3c^4x^3$$

Answer

$$35ax+49abcx$$

Answer

$$-14ax^3b^4$$

Question 10

Divide y da como respuesta el cociente.

Accepted Answer

3x³+2x²+5x+4

Answer

3x³2x²-5x+4

Answer

3x³+2x²+5x-6

Answer

x³+2x²+5x+4

Question 11

$$\frac{\frac{a}{b}-\frac{b}{a}}{1+\frac{b}{a}}$$

Accepted Answer

$$\frac{a-b}{b}$$

Answer

$$\frac{b-a}{a}$$

Answer

$$ab$$

Answer

$$\frac{b}{a}+1$$

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