MAT 8/1 - algebra
Authored by Kateřina Čebišová
Mathematics
6th Grade
Used 3+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vypočítej hodnotu výrazu:
m = -3, n = 5
2m2 + n + 3m - n2 =
4
-4
11
- 11
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pětina poloviny z desetiny čísla 1 000 je:
24
10
15
120
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zapiš jako výraz:
rozdíl dvojnásobku p a čtyřnásobku q zvětšený o 15 =
(2p - 4q) + 15
p2 - q2 + 15
(p - q)2 + 15
(2p - 4q) - 15
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Odstraň závorky a co nejvíc zjednoduš výraz:
- (- 10a + 3b - 6) - 7a - ( - 5b + 8a) =
= -5a - 2b + 6
= -5a + 2b + 6
= 5a - 2b - 6
= 5a + 2b - 6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Doplň tak, aby platila rovnost:
2x . _____ = - 2x5
x4
x3
- x3
- x4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Doplň tak, aby platila rovnost:
______ . 2xy = - 4x2y
2x
- 2x2
2x2
- 2x
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vynásob a výraz zjednoduš:
( 2a + 3b) . ( 2a - 5b) =
= 2a2 - 4ab - 15b2
= 4a2 - 4ab + 15b2
= 4a2 - 4ab - 15b2
= 4a2 + 4ab - 15b2
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