ταυτότητες

ταυτότητες

9th Grade

15 Qs

quiz-placeholder

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ταυτότητες

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Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

Created by

Σοφία Σμιτ

Used 27+ times

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15 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Ποιες από τις παρακάτω ισότητες είναι ταυτότητες;

0x = 0

xy = 0

a2a2=a4a^2\cdot a^2=a^4

α + β = γ

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Το ανάπτυγμα του  (y+α)2\left(y+α\right)^2  είναι:

 y2+α2y^2+α^2  

 y22yα+α2y^2-2yα+α^2  

 y2+yα+α2y^2+yα+α^2  

 y2+2yα+α2y^2+2yα+α^2  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Το ανάπτυγμα του  (x+1)3\left(x+1\right)^3  είναι το:

 x3+3x1+13x^3+3\cdot x\cdot1+1^3  

 x3+3x21+3x12+13x^3+3\cdot x^2\cdot1+3\cdot x\cdot1^2+1^3  

 x3+13x^3+1^3  

 x3+x21+x12+13x^3+x^2\cdot1+x\cdot1^2+1^3  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Το ανάπτυγμα του  (2α+1)2\left(2α+1\right)^2  είναι το:

 2α2+2α1+12α^2+2α\cdot1+1  

 2α2+4α+12α^2+4α+1  

 4α2+4α+14α^2+4α+1  

 4α2+14α^2+1  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Το ανάπτυγμα του (β - 3)(β + 3) είναι το:

β23β^2-3

β29β^2-9

9β29-β^2

3β23-β^2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Το ανάπτυγμα του  (α2)3\left(α-2\right)^3  είναι τό:

 α33α2+23α^3-3α\cdot2+2^3  

 α323α^3-2^3  

 α3α22+α2223α^3-α^2\cdot2+α\cdot2^2-2^3  

 α33α22+3α2223α^3-3\cdotα^2\cdot2+3\cdotα\cdot2^2-2^3  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Το ανάπτυγμα του  (x3)2\left(x-3\right)^2  είναι το:

 x26x+9x^2-6x+9  

 (x3)( x+3)\left(x-3\right)\left(\ x+3\right)  

 x29x^2-9  

 x23x+9x^2-3x+9  

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