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Vytýkání výrazů, vzorce - 8.ročník

Authored by Helena Prášková

Mathematics

8th Grade

Used 51+ times

Vytýkání výrazů, vzorce - 8.ročník
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8 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

10m2n + 15mn2

5mn . (2m + 3n)

10mn . ( m + 5n)

2mn . (5m + 7n)

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

15a3b2 + 25a2b4 = 5a2b2 . (3a + 5b2)

rovnost neplatí

rovnost platí

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

60x + 5x2

5 . (12x + x2)

x . (60 + 5x)

5x . (12 + x)

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

(a - 3b)2 =

a2 - 6ab + 9b2

a2 - 3ab + 3b2

a2 - 6a2b2 + 9b2

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

(2p - 7q)2 =

2p2 - 14pq + 7q2

4p2 - 14p2q2 + 49q2

4p2 - 14pq + 49q2

4p2 - 28pq + 49q2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

(3a2 + 11)2 =

3a4 + 33a2 + 121

9a4 + 33a2 + 121

9a4 + 66a2 + 121

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

(0,5x - 0,8y)2 =

2,5x2 - 0,8xy + 6,4y2

0,25x2 - 0,8xy + 0,64y2

0,25x2 - 0,4xy + 0,64y2

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