Formule de calcul prescurtat - 1
Authored by Peter Pop
Mathematics
7th - 8th Grade
Used 324+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Scrieţi următoarele formule de calcul prescurtat:
a2-2ab+b2
a2+2ab+b2
a2-2ab-b2
a2-b2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Scrieţi următoarele formule de calcul prescurtat:
m2-2mn+n2
m2+2mn+n2
m2+2mn-n2
m2-n2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Scrieţi următoarele formule de calcul prescurtat:
v2-u2
u2-2uv+v2
u2-v2
u2+2uv+v2
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Calculaţi, folosind formule de calcul prescurtat (literele reprezintă numere reale):
x2-6x+9
9+6x-x2
9-6x+x2
9+6x+x2
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Calculaţi, folosind formule de calcul prescurtat (literele reprezintă numere reale):
y2-10y+25
y2+10y+25
y2-25
y2-10y-25
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculaţi, folosind formule de calcul prescurtat (literele reprezintă numere reale):
2x-49
x2-14
x2-49
x2-14x+49
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Completaţi pentru a obţine propoziţii adevărate:
(x+3)(x-3)=x2-9
(2x+3)(2x-3)=4x2-9
(2x+3)(2x+3)=4x2-9
(2x+3)(2x-3)=2x2-9
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