
Test basic
Authored by ROMINA CALAMANTE
Mathematics
8th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In un'equazione di secondo grado Δ=24 allora
l'equazione ha due soluzioni distinte
l'equazione non ha soluzioni
l'equazione ha due soluzioni coincidenti
nessuna delle risposte è corretta
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
L'equazione x2+25=0
non ha soluzioni
ha soluzioni x=±5
ha una sola soluzione x=5
ha una sola soluzione x=-5
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Per trovare i numeri uguali alla metà dei propri quadrati usi l'equazione
x=(x/2)2
x/2=x2
x=x2/2
x=x2/3
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Un rettangolo ha la base lunga 5 cm in meno dell'altezza. Se si indica con b la base allora l'area ha espressione
b2-5b
b2+5b
b2+5
b2-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se un'equazione di secondo grado non ha soluzioni allora
Δ=0
Δ>0
Δ<0
Δ≥0
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quali sono le C.E. dell'equazione?
x≠-√2+3 Ʌ x≠+√2+3
x≠-√3+2 Ʌ x≠+√3+2
x≠-√2±3
x≠2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'equazione x2/x = 1
non ha soluzioni
ha soluzioni x=0 V x=1
ha una sola soluzione x=1
ha infinite soluzioni
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