Equazioni di II grado e di grado superiore al II
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'equazione 2x2 + 3x + 1 = 0
ha soluzione x = 1
ha due soluzioni distinte
è un'equazione spuria
è equivalente a 2(x + 1)2 = 0
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'equazione 2x2 + 5x = 0
è un'equazione pura
ha due soluzioni uguali ma opposte
ha soluzione x = 5/2
ha due soluzioni distinte
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'equazione 3x2 - 6 = 0
ha due soluzioni reali coincidenti
ha soluzione x = 0
non ha soluzioni razionali
è equivalente a x2 = 3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'equazione 2x2 + 3x - 14 = 0
è equivalente all'equazione (2x + 7)(x - 2) = 0
ha soluzione x = - 2
non ha soluzioni reali
ha discriminante Δ = 100
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'equazione 2x2 + 6x + 9/2 = 0
è equivalente all'equazione (x - 3)2 = 0
ha due soluzioni reali distinte
non ha soluzioni reali
ha discriminante Δ = 0
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5x2 + 20 = 0
ha soluzioni x = - 2
ha discriminante Δ = 100
è equivalente all'equazione (x + 2)(x - 2) = 0
non ha soluzioni reali
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
La disequazione x2>0 è verificata per:
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