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Nevezetes szorzatok

Authored by Janka Kisfali

Mathematics

9th Grade

Used 447+ times

Nevezetes szorzatok
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Melyikkel lesz egyenlő az (a+b)2 ?

a2+b2

a2+ab+b2

a2+2ab+b2

a+2ab+b

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Melyik a helyes?

(a+b)(a-b)=a2-b2

(a-b)(a+b)=a2+ab+b2

(a+b)(a-b)=a2-2ab-b2

(a+b)(a-b)=a2+2ab+b2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mivel egyenlő (4x-7)(4x+7)=?

16x²-49

4x²+56x-49

16x²-49x-49

4x²-49

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Melyikkel lesz egyenlő

 (2xy)(2x+y)=\left(2x-y\right)\left(2x+y\right)=  ?

 4xy4x-y  

 4x2y24x^2-y^2  

 4x22xyy24x^2-2xy-y^2  

 4y2+x24y^2+x^2  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Igaz-e minden valós számra

 x21=(x1)2x^2-1=\left(x-1\right)^2  ?

hamis

igaz

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mivel egyenlő

 (ab)2=\left(a-b\right)^2=  ?

 a22ab+b2a^2-2ab+b^2  

 a2b2a^2-b^2  

 a2+b2a^2+b^2  

 a2+ab+b2a^2+ab+b^2  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (10d+6)2=?\left(10d+6\right)^2=?  

 100d2+120d+36100d^2+120d+36  

 100d2+36100d^2+36  

 100d236100d^2-36  

 100d2120d+36100d^2-120d+36  

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