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QUIZ

8th
grade

Mathematics

49%

accuracy

5

plays

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3 years

Mathematics

8th

grade

Formule de calcul prescurtat

user

5
plays

9 questions

9 questions

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1. Multiple Choice
2 minutes
1 pt
Scrieţi următoarele formule de calcul prescurtat:
a²-2ab+b²
a²+2ab+b²
a²-2ab-b²
a²-b²
2. Multiple Choice
2 minutes
1 pt
Scrieţi următoarele formule de calcul prescurtat:
m²-2mn+n²
m²+2mn+n²
m²+2mn-n²
m²-n²
3. Multiple Choice
3 minutes
1 pt
Calculaţi, folosind formule de calcul prescurtat (literele reprezintă numere reale):
x²-6x+9
9+6x-x²
9-6x+x²
9+6x+x²
4. Multiple Choice
3 minutes
1 pt
Calculaţi, folosind formule de calcul prescurtat (literele reprezintă numere reale):
y²-10y+25
y²+10y+25
y²-25
y²-10y-25
5. Multiple Choice
30 seconds
1 pt
( y + 1 )²=
y²-2y+1
y²+2y+1
y²+1
y²-1
6. Multiple Choice
30 seconds
1 pt
( 5 + a )²=
25+5a+a²
25-10a+a²
25+10a+a²
25-a²
7. Multiple Choice
30 seconds
1 pt
(√6 + √7)²=
13+2√42
13-2√42
13
13+√42
8. Multiple Choice
30 seconds
1 pt
( 3 – x )²=
9+6x+x²
9-6x+x²
9-x²
9-3x+x²
9. Multiple Choice
30 seconds
1 pt
( 2a – 3b )²=
4a²-12ab+9b²
4a²+12ab+9b²
4a²-9b²
4a²-6ab+9b²
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