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Výrazy

Authored by Štěpánka Baierlová

Mathematics

8th Grade

Used 115+ times

Výrazy
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6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Zjednodušte výraz  x2+3x2=x^2+3x^2=  

nejde sečíst

 4x44x^4  

 4x24x^2  

 3x43x^4  

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Vynásobte  y(3y−2)=y\left(3y-2\right)=  

 3y2+2y3y^2+2y  

 3y2−2y3y^2-2y  

 y2y^2  

 3y3y  

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Vynásobte  4a2b  .  2ab=4a^2b\ \ .\ \ 2ab=  

 6a3b26a^3b^2  

 2a2a  

 8a3b28a^3b^2  

 8a2b28a^2b^2  

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Vyberte všechny příklady, které jsou správně.

 (−2)2=4\left(-2\right)^2=4  

 −2 . (−3)=6-2\ .\ \left(-3\right)=6  

 32−23=13^2-2^3=1  

 (−4)2=16\left(-4\right)^2=16  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Vynásobte  (x−3)(2+x)=\left(x-3\right)\left(2+x\right)=  

 x2−x−6x^2-x-6  

 x2−x+6x^2-x+6  

 x2−6x^2-6  

 2x2−62x^2-6  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Vypočítejte  y3+y2+4 +3y2y^3+y^2+4\ +3y^2  

 3y7+43y^7+4  

 y3+4y2+4y^3+4y^2+4  

 5y7+45y^7+4  

 y3+2y2+4y^3+2y^2+4  

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