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PRIMER QUIZ OCTAVO NOV. 1

Authored by William Prieto

Mathematics

8th Grade

Used 3+ times

PRIMER QUIZ OCTAVO NOV. 1
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10 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

El factor común o máximo común divisor entre 30, 45 y 120 es

A. 10

B. 30

C. 15

D. 5

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

B. 25x²

C. 5x²

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Al factorizar 100a²b³c - 150ab²c² +50ab³c³ - 200abc² se obtiene

A. 50abc (2ab² − 3bc + b²c² - 4c)

B. 10abc (10ab² − 15bc + 5b²c² – 20c)

C. 5(20ab² - 30bc + 10b²c² − 40c)

D. 2(50ab² - 75bc +25b²c² - 100c)

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Al factorizar completamente la expresión a(x² − 1) + b(x² − 1) se obtiene

A. (x + 1)(a + b)

B. (x - 1)(a + b)

C. (x + 1)(x - 1)(a + b)

D. (x - 1)(x - 1)(a + b)

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Al factorizar 4x² – 16y² se obtiene

A. (2x - 4y) (2x – 4y)

B. 4(x + 2y)(x – 2y)

C. 2(x+2y)(x - 2y)

D. 4(x + 2y)(x + 2y)

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A. (2x-4y)(2x-4y)

B. 4(x+2y) (x -2y)

C. 2(x+2y) (x -2y)

D. 4(x+2y) (x +2y)

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Al factorizar completamente la expresión 25a³b – 81ab³ se obtiene

A. ab(25a²-81b²)

B. ab(5a-9b) (5a – 9b)

C. ab (5a +9b)(5a – 9b)

D. b(5a²+9ab)(5a² — 9ab)

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