Equaz 2o grado 2B

Equaz 2o grado 2B

10th Grade

27 Qs

quiz-placeholder

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Equaz 2o grado 2B

Equaz 2o grado 2B

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Medium

Created by

Michele D'Asaro

Used 2+ times

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27 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Risolvi l'equazione 2x - 4x= 0

x1 = 0  e  x2 = 1/2
x1 = 0  e  x2 = -1/2
x1 = 2  e  x2 = -4
impossibile

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Risolvi l'equazione 2 - 4x= 0

x1 = - 1/√2  e  x2 = 1/√2
x1 = √2  e  x2 = -√2
x1 = 2√2 e  x2 = - √2
impossibile

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Risolvi l'equazione 4 - 2x= 0

x1 = - 1/√2  e  x2 = 1/√2
x1 = √2  e  x2 = -√2
x1 = 2√2 e  x2 = - √2
impossibile

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Risolvi l'equazione 4 + 2x= 0

x1 = - 1/√2  e  x2 = 1/√2
x1 = √2  e  x2 = -√2
x1 = 2√2 e  x2 = - √2
impossibile

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Risolvi l'equazione 2x2 - x - 6 = 0

x1 = - 3/2  e  x2 = 2
x1 =  3/2  e  x2 = - 2
x1 =  3/2  e  x2 = 2
impossibile

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Per quali valori di a l'equazione parametrica 
ax2 - (a+3) x + 8 + a = 0
ammette soluzioni reali? 

-9 ≤ a ≤ 1/3
-9 < a < 1/3
a < -9  v  a > 1/3
nessun valore

7.

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

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