Adunarea,scăderea numerelor reale reprezentate prin litere

Quiz
•
Mathematics
•
2nd Grade
•
Hard
Inessa Gumenita
Used 4+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
La adunarea a doi termeni asemenea dintr-o expresie algebrică:
se adună exponenții literelor din părțile literare
se înmulțesc coeficienții termenilor
se adună coeficienții termenilor
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Selectează varianta corectă:
5x+(-5x)=10X
(-5x)+(-5x)=-10x
(-5x)-(-5x)=-10x
-5x-5x=0
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Selectează termenii asemenea:
3xz,-5zx,-2xy,3yz
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Selectează varianta corectă:
3ab-2ab=ab
2,5xy-3,5xy=xy
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Rezultatul calculului -7x-4x+12x este:
-x
x
15x
23x
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Valoarea expresiei x2-2x+15 pentr x=3 este?
15
18
19
27
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Rezultatul calculului 3x2+5x-4-6x-2x2+3 este egal cu...?
-1
8.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Asociază expresiei 6y2+9x-10x-8y2 suma obținută prin reducerea termenilor asemenea:
9.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Valoarea numerică a expresiei 2m+5n pentru m=-1 și n=2 este:
-8
8
12
-1
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