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Mnożenie sum algebraicznych

Authored by Marta Kłaczek

Mathematics

7th - 9th Grade

Used 204+ times

Mnożenie sum algebraicznych
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8 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Wynikiem mnożenia  2x(x3y)-2x\left(x-3y\right)  jest:

 2x2+6xy-2x^2+6xy  

 2x26xy-2x^2-6xy  

 2x+6xy-2x+6xy  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wynikiem działania  (a2)(5a+3b)\left(a-2\right)\left(5a+3b\right) jest: 

 5a+3ab10a+6b5a+3ab-10a+6b  

 5a2+3ab10a+6b5a^2+3ab-10a+6b  

 5a2+3ab10a6b5a^2+3ab-10a-6b  

 30a2b-30a^2b  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wynikiem działania (y4x)(2x+y)\left(y-4x\right)\left(-2x+y\right)  jest: 

 y4x2x+yy-4x-2x+y  

 8x2+y28xy8x^2+y^2-8xy  

 8x2+2y6xy8x^2+2y-6xy  

 8x2+y26xy8x^2+y^2-6xy  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wyrażenie (4ab)(a+2b)\left(4a-b\right)\left(a+2b\right)  przedstawione w najprostszej postaci, to:

 4a2+7ab2b24a^2+7ab-2b^2  

 4a+7ab2b4a+7ab-2b  

 4a2+9ab+2b24a^2+9ab+2b^2  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Wyrażenie (43x)(x+y1)\left(4-3x\right)\left(x+y-1\right)  po uproszczeniu ma postać: 

 7x3xy+4y43x27x-3xy+4y-4-3x^2  

 43x+x+y14-3x+x+y-1  

 7x+4y+43x2+3xy7x+4y+4-3x^2+3xy  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Po opuszczeniu nawiasu  (xy+2)-\left(x-y+2\right) otrzymamy: 

 xy+2-x-y+2  

 x+y+2-x+y+2  

 x+y2-x+y-2  

 x+y2x+y-2  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Pole prostokąta możemy zapisać:

2(2x1)+2(x+1)2\left(2x-1\right)+2\left(x+1\right)

2(2x1)(x+1)2\left(2x-1\right)\left(x+1\right)

2x2+2xx12x^2+2x-x-1

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