Ρίζες

Ρίζες

8th Grade

13 Qs

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Ρίζες

Ρίζες

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

Σοφία Σμιτ

Used 122+ times

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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Βρείτε την τιμή της παράστασης:

 4+29\sqrt{4}+2\cdot\sqrt{9}  

8

9

1

0

5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 2+4\sqrt{2+\sqrt{4}}  

2

 2\sqrt{2}  

4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Το 0 δεν έχει ρίζα.

Σωστό 
Λάθος

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Η τετραγωνική ρίζα του 16 είναι :

+8

+16

+4

+4 ή -4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν  χ=25\sqrt{χ}=-25   τότε:

 χ=5χ=-5  

 χ=5χ=5  

 χ=625χ=625  

η σχέση είναι αδύνατη

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν   α=βα=\sqrt{β}  όπου  α,β  θετικοί αριθμοί  διαφορετικοί απο το 1 τότε

 α2=βα^2=β  

 β2=αβ^2=α  

 α2=β2α^2=β^2  

 α=βα=β  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Η εξίσωση  ψ2=9ψ^2=9 

έχει λύση το 3

έχει λύση το -3

έχει λύσεις το 3 και το -3

δεν έχει λύσεις

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