
Formule de calcul prescurtat
Authored by Panu Elena
Mathematics
8th Grade
Used 48+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculaţi 2(3x+1) + 3(1-2x)
12x+5
5
12x
6
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculaţi x2x + x + x6 : x3
x(2x2 + 1)
x3 + x + x2
x3 + x
2x2 + x
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculaţi xx + 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 "x7 : x5 + x11 : x9 - x21 : x19 + x3 : x = 2x2"
Adevărat
Fals
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Să se calculeze 3(x + 1) - 3(x - 1)
2
6
0
6x
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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