Calcul prescurtat
Authored by Loghin Aliona
Mathematics
10th Grade
Used 2+ times
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6 questions
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1.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
(a-b)2 =
a2 - 2ab+b2
a2 + 2ab+b2
a2 - 2ab-b2
a2 +b2
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
(2x+√5y)2
4x2 +4√5xy+5y2
4x2 - 4√5xy+5y2
2x2 +4√5xy+5y2
4x2 +4√5xy-5y2
3.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Desfaceți paranteza
2x(x+3)=
2x2 +6x
2x2 +3x
2x2 -6x
2x2 -3x
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Descompuneți în factori
8xy-12x2
4x(2y-3x)
2x(4y -3x)
x(8y-12)
4x(2y+3x)
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Calculați aria pătratului cu latura de
(2√5 +3)cm
(29+12√5)cm2
(29+12√5)cm
(19+2√5)cm2
(29-12√5)cm2
6.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Aduceți la forma mai simplă expresia
25x2+(7+5x)(7-5x)
25x2+7+5x
49
25x2 - 7-5x
25x2
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