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8 b

Authored by IREN NAGY

Mathematics

8th Grade

Used 6+ times

8 b
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17 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (a+b)2=\left(a+b\right)^2=  

 a2 +2ab +b2a^2\ +2ab\ +b^2  

 a2 + b2a^2\ +\ b^2  

 a2b2a^2\cdot b^2  

 a22ab+b2a^2-2ab+b^2  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (a b)2=\left(a\ -b\right)^2=  

 a2  b2a^2\ -\ b^2  

 a2 + 2ab  b2a^2\ +\ 2ab\ -\ b^2  

 a2  2ab + b2a^2\ -\ 2ab\ +\ b^2  

 a22abb2a^2-2ab-b^2  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (a + b)(a  b)=\left(a\ +\ b\right)\cdot\left(a\ -\ b\right)=  

 a2 + b2a^2\ +\ b^2  

 a2  b2a^2\ -\ b^2  

 2ab2ab  

 a22ab+b2a^2-2ab+b^2  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (x +2)2=\left(x\ +2\right)^2=  

 x2 + 22x^2\ +\ 2^2  

 x2 + 2x+22x^2\ +\ 2x+2^2  

 x2 + 2x^2\ +\ 2  

 x2 +4x +4x^2\ +4x\ +4  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (a +5)(a  5)=\left(a\ +5\right)\cdot\left(a\ -\ 5\right)=  

 a2 +52a^2\ +5^2  

 a2 5a^2\ -5^{ }  

 a2 25a^2\ -25  

 25a225a^2  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (3  x)2=\left(3\ -\ x\right)^2=  

 9 x29\ -x^2  

 9 +x29\ +x^2  

 9 6x + x29\ -6x\ +\ x^2  

 32  2x + x23^2\ -\ 2x\ +\ x^2  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Végezd el a műveleteket!

 (3x+2)(3x2)(3x2)2+(3x+2)2=\left(3x+2\right)\left(3x-2\right)-\left(3x-2\right)^2+\left(3x+2\right)^2=  

 27x2+427x^2+4  

 9x2+12x49x^2+12x-4  

 9x2+24x49x^2+24x-4  

 9x2+24x+49x^2+24x+4  

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