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Revisão de Matemática cap 4.

Authored by Joao Paulo

Mathematics

1st - 12th Grade

Used 2+ times

Revisão de Matemática cap 4.
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(Covest) A forma fatorada da expressão (a + b) . y + 2 . (a + 1b) é:

(a + b) . (y+2)

2ay + 2by

3 (a + b) . y

(a + b) . y + b

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O valor de 12.345² - 12.344² − é:

24.600

24.689

24.699

24.700

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(Objetiva) 8tilizando-se os produtos notáveis, é correto afirmar que (x + 5) . (2x − 5) é equivalente a:

4x² − 20x + 25

4x² + 25

4x² − 25

2x² − 25

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A forma fatorada do polinômio x² -10x - 25 é:

(x-5).(x+5)

(x-5).(x-5)

(x+5).(x+5)

(x+5).(x-5)

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O polinômio da forma fatorada (x+2).(x-2) é:

x²+2x -4

x² + 4

x² - 4

x² +2x +4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Fatorando o polinômio x² + 8x + 16 é:

(x+4).(x+4)

(x+4).(x-4)

(x-4).(x+4)

(x-4).(x-4)

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Calculando o produto notavel (x+2)³ obtem-se:

x³ +4x²+12x -8

x³ +6x²+12x+8

x²-6x²+12x-8

x³-6x²-12x-8

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