
Revisão de Matemática cap 4.
Authored by Joao Paulo
Mathematics
1st - 12th Grade
Used 2+ times

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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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