
polinomi e radicali
Mathematics
10th Grade - Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
x2 -3 = 0
x = 3
x = ±√3
x = √3
x = -√3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La scomposizione di 4a2+b2+9c2+12ac-4ab-6bc è:
(2a-b-3c)(2a+b+3c)
(-2a+b+3c)2
(2a-b+3c)2
(2a+b-3c)2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale delle seguenti è un'identità?
n√a =b←bn=a ∀n∈R
n√a = b↔ bn = a n≥0
n√a = b ↔ bn=a n≤0
n√a = b ⇒ bn =a ∀n∈R
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
√(9−√56) =
√5−√4
3−2√14
3−2∜14
√7−√2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
√2x − 1 ≥ √3 x
x ≤ 1 /( √3+√2 )
x ≤ -√3-√2
x ≥ -√3-√2
x ≥ √3+√2
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
esegui la razionalizzazione di 1 / (∛5 -∛2)
1/3
(∛5 -∛2) / 3
(∛25 +∛10 +∛4) / 3
(∛5 +∛2) / 3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La scomposizione di 3x2 +9x−15 è:
3(x -5)(x +2)
3(x+5)(x−2)
(3 x+5)(x−2)
(3 x−5)(x−2)
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