Quiz about Repaso de matemáticas

Question 1

El resultado de sumar (25x³y³) + (20x³y³) es:

Accepted Answer

45x3y3

Answer

10xy

Answer

10x + 5y

Answer

45x6y6

Question 2

Si sumamos 100x² + 100x³ con 100x² el resultado seria

Accepted Answer

200x² + 100x³

Answer

100x² + 200x³

Answer

100x² - 200x³

Answer

200x2

Question 3

la suma de (3xy² - 4x²z³) + (-2xy²+ 2x²z³ - 11y²z³) es:

Accepted Answer

xy²-2x²z³ - 11y²z³

Answer

xy -2xz + 11 yz

Answer

x²y - 4x²z³ - 11y²z³

Answer

yy² - 2xz + 11y²z³

Question 4

La suma de 10x³y³z³ mas 5xy es:

Accepted Answer

10x³y³z³ + 5xy

Answer

10x³y³z³ - 5x³y³z³

Answer

15xyz

Answer

10x³y³z³ - 5xy

Question 5

Suma 2x³+ 3x mas 3x²

Accepted Answer

2x³ +3x² +3x

Answer

2x3 + 6x

Answer

2x²+ 3x² + 3x

Answer

6x2 - 6x

Question 6

$$9y+8x-2x+3y=$$

Accepted Answer

$$6x+12y$$

Answer

$$10x+12y$$

Answer

$$18xy$$

Answer

$$10x-12y$$

Question 7

$$2pq-3p-12q-15q+7pq-13p$$

Accepted Answer

$$9pq-16p-27q$$

Answer

$$6pq-16p-27q$$

Answer

$$3pq-15p-15q$$

Answer

$$-9pq+15p-27q$$

Question 8

$$2pq-3p-12q-15q+7pq-13p$$

Accepted Answer

$$9pq-16p-27q$$

Answer

$$6pq-16p-27q$$

Answer

$$3pq-15p-15q$$

Answer

$$-9pq+15p-27q$$

Question 9

$$\frac{2}{3}a^2,\frac{1}{2}ab,-\frac{2}{1}b^2,-\frac{3}{4}ab,\frac{1}{3}a^2,-\frac{3}{5}b^2$$ es igual a $$a^2-\frac{1}{4}ab-\frac{13}{5}b^2$$

Accepted Answer

Cierto

Answer

Falso

Question 10

La resta de ( 3xy +2x) - ( 2x + 9y) es igual a:

Accepted Answer

3xy + 9y

Answer

3xy + 4x

Answer

5x - 9y

Answer

6xy + 4x - 9y

Question 11

La resta de (2x² -3x +2) - (7x² - 8x) =

Accepted Answer

9x²-11x + 2

Answer

7x² - 2x +8

Answer

9x2 +11x

Answer

7x2

Question 12

La resta de (x³y²z² + 2xy ) - ( 10xy) =

Accepted Answer

x³y²z² - 8xy

Answer

xyz

Answer

x3y2z2

Answer

8xy

Question 13

( 7m⁴n² - 3m + 2n) - ( 6m + 6n) =

Accepted Answer

7m⁴n² + 3m + 8n

Answer

12mn

Answer

12m²n + 10

Answer

7m⁴n² -6m

Question 14

La resta de (2ab -6c +12) - ( 10 ab)=

Accepted Answer

- 8ab - 6c + 12

Answer

2ab - 4bc +12

Answer

-8ab -4c +12

Answer

8ab

Question 15

La resta de ( 2x + 3y - 5z ) - ( 8x + 2y +2z)=

Accepted Answer

-6x - y - 7z

Answer

6x + 26 -12z

Answer

10x - 3y - z

Answer

x+y - z

Question 16

En el triangulo de pascal cada fila empieza en 1 y termina en 1.

Accepted Answer

Verdadero

Answer

Falso

Question 17

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

Accepted Answer

$$9x^2-30x+25$$

Answer

$$9x-15x+25$$

Answer

$$6x^2-30x+10$$

Question 18

$$(3m–n^2)^2$$

Accepted Answer

$$=9m^2-6mn^2+n^4$$

Answer

$$=9m^2+3mn+n^2$$

Answer

$$=6m^2–6mn+n^2$$

Question 19

$$\left(\frac{1}{2}a^2-\frac{2}{3}b\right)^{\ ^2}$$

Accepted Answer

$$=\frac{1}{4}a^4-\frac{2}{3}a^2b+\frac{4}{9}b^2$$

Answer

$$=\frac{1}{4}a^4+\frac{4}{3}a^2b+\frac{4}{9}b^2$$

Answer

$$=\frac{1}{4}a^4-\frac{4}{3}a^2b+\frac{4}{9}b^2$$

Question 20

$$\left(6m^{2a}-3n^{3a}\right)^2$$

Accepted Answer

$$=36m^{4a}-36m^{2a}n^{3a}+9n^{6a}$$

Answer

$$=36m^{4a}-36m^{2a}n^{3a}+9n^{9a}$$

Answer

$$=12m^{4a}-36m^{2a}n^{3a}+6n^{6a}$$

Question 21

$$\left(4c^{3x}+4d^{4x}\right)$$

Accepted Answer

$$=16c^{6x}+32c^{3x}d^{4x}+16d^{8x}$$

Answer

$$=16c^{9x}+32c^{3x}d^{4x}+16d^{16x}$$

Answer

$$=8c^{6x}+32c^{3x}d^{4x}+8d^{8x}$$

Question 22

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

Accepted Answer

$$a^2-2ab+b^2$$

Answer

$$a^2-2ab-b^2$$

Answer

$$a^2-b^2$$

Answer

ninguna de las anteriores

Question 23

(x+ 4)(x - 4)=

Accepted Answer

x2 - 16

Answer

x2 - 8

Answer

(x-4)2

Answer

x² - 8x + 16

Question 24

$$\left(x+9\right)\left(x-9\right)=$$

Accepted Answer

$$x^2-81$$

Answer

$$x^2-18x+81$$

Answer

$$x^2+18x-81$$

Answer

$$x^2+81$$

Question 25

$$\left(3x+5\right)\left(3x-5\right)=$$

Accepted Answer

$$9x^2-25$$

Answer

$$9x-10$$

Answer

$$9x²+25$$

Question 26

Question 26.

Accepted Answer

$$x^2-1$$

Answer

x-2

Answer

$$x^2-2$$

Answer

$$x^2+1$$

Question 27

$$\left(a+b\right)\left(a-b\right)=$$

Accepted Answer

$$a^2-b^2$$

Answer

$$a^2+2ab+b^2$$

Answer

$$a^2-2ab+b^2$$

Answer

$$a^2+b^2$$

Question 28

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

Accepted Answer

9 - 4x2

Answer

-9 - 4x2

Answer

9 + 4x2

Answer

-9 + 4x2

Question 29

$$\left(a^2+5b^3\right)·\left(a^2-5b^3\right)$$

Accepted Answer

$$a⁴-25b⁶$$

Answer

$$a⁴+25b⁶$$

Answer

$$2a²-25b⁶$$

Answer

$$a⁴-10ab+25b⁶$$

Question 30

(a+ x) (a - x)

Accepted Answer

a2 -x2

Answer

2a² - 2x²

Answer

2a -2x

Answer

2a2

Question 31

$$\left(x+9\right)\left(x-9\right)=$$

Accepted Answer

$$x^2-81$$

Answer

$$x^2-18x+81$$

Answer

$$x^2+18x-81$$

Answer

$$x^2+81$$

Question 32

Question 32.

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 33

El resultado de $$\sqrt{49\ }$$ es:

Accepted Answer

7

Answer

6

Answer

8

Answer

4

Question 34

El resultado de $$\sqrt{64\ }$$ es:

Accepted Answer

8

Answer

5

Answer

9

Answer

7

Question 35

Efectuar: $$\sqrt{25}.\sqrt{9}.2^2$$

Accepted Answer

60

Answer

20

Answer

40

Answer

80

Question 36

Expresa como potencia 3² x 3⁴ x 3 =

Accepted Answer

37

Answer

36

Answer

97

Answer

30

Question 37

Calcule el valor de:
$$2^2.3^0.4^3.5$$

Accepted Answer

1.280

Answer

3.840

Answer

640

Answer

0

Question 38

El resultado del siguiente logaritmo Log₄16 = es

Accepted Answer

2

Answer

4

Answer

8

Answer

16

Question 39

La respuesta es:

Accepted Answer

3

Answer

5

Answer

24

Answer

10

Question 40

El resultado de

$$\log_264=$$

Accepted Answer

8

Answer

4

Answer

6

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