Formule de calcul prescurtat
Authored by Ana Godovaniuc
Mathematics
8th Grade
Used 102+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(x+3)2
x2+9
X2-9
x2+6x+9
x2-6x+9
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(5+x)2
25+x2
25+10x+x2
5-10x+x2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(d+3)2
d2+9
9+6d+d2
d2+6d+9
d2-6d-9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(5x-3y)2
5x2-6x+9y
25x-10xy+9y
25x2-30xy+9y2
25x2-9y2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(x-5y)2
x2-25y2
x2+25y2
x2-10xy+25y2
x2+10xy+25y2
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
(3x+2)(3x-2)
9x2-4
9x2+4
9x2+12x+4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(3-2a2)2
9-4a2
9+4a4
9-12a2+4a4
9+12a2+4a4
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