
Formule de calcul prescurtat
Authored by Alexandru Camelia Nicoleta
Mathematics
8th Grade
Used 18+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculaţi 4(3x+1) + 3(1-4x)
12x+7
7
12x
6
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculaţi x6:x5 - x + x6 : x3
x(2x2 + 1)
x3 + x + x2
x3
2x2 -1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculaţi x3:x + x + x : x
x2 + 2x
2x + 1
x2 + 1
x2 + x + 1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Răspundeţi cu adevărat sau fals "x5 : x5 + x11 : x9 - x21 : x19 + x3 : x = 2x3"
Adevărat
Fals
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Să se calculeze 4(x - 1) - 4(x + 1)
2
-8
0
8x
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Efectuează (x -3)2
x2 + 2x + 9
2x + 6
x2 -6x + 9
x2 +6x + 9
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Efectuează (2x + 3)2
4x2 + 9 - 12x
4x2 + 9 + 12x
4x + 9
4x2 - 9
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