Calcul algebric. Ora de sinteză.

Calcul algebric. Ora de sinteză.

7th Grade

10 Qs

quiz-placeholder

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Calcul algebric. Ora de sinteză.

Calcul algebric. Ora de sinteză.

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Medium

Created by

Tatiana Ceban

Used 604+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculați:  (x+3)2\left(x+3\right)^2  

 x23x+9x^2-3x+9  

 x2+6x+9x^2+6x+9  

 x29x^2-9  

 x2+9x^2+9  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculați  (x4)(x+4)\left(x-4\right)\left(x+4\right)  

 x16x-16  

 x2+16x^2+16  

 x24x^2-4  

 x216x^2-16  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 (x9)2\left(x-9\right)^2  Efectuații folosind formulele de calcul prescurtat.

 x281x^2-81  

 x2+81x^2+81  

 x218x+81x^2-18x+81  

 x2+18x+81x^2+18x+81  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calculați  (x2)2(x2)(x+2)\left(x-2\right)^2-\left(x-2\right)\left(x+2\right)  

 4x4x  

 4x84x-8  

 84x8-4x  

 4x-4x  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Descompuneți în factori:  x249x^2-49  

 (x49)(x+49)\left(x-49\right)\left(x+49\right)  

 (x7)(x+7)\left(x-7\right)\left(x+7\right)  

 x(x7)x\left(x-7\right)  

 x(x+7)x\left(x+7\right)  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Descompuneți în factori:  4x212x+94x^2-12x+9  

 (4x9)2\left(4x-9\right)^2  

 (2x+3)2\left(2x+3\right)^2  

 (2x3)2\left(2x-3\right)^2  

 (2x9)2\left(2x-9\right)^2  

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Reduceți termenii asemenea: 2x-4y+5x+7y=

7x+3y

7x+11y

7x-11y

7x-3y

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