Aljabar

Quiz
•
Mathematics
•
7th Grade
•
Hard
yudha fariana
Used 20+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
1. Hasil penjumlahan dari -3a –6b + 7 dan 13a – (-2b) + 4 adalah ....
16a -8b + 11
10a + 4b + 11
10a -4b + 11
-16a -4b + 11
Answer explanation
(-3a –6b + 7) + (13a – (-2b) + 4)
= (- 3a + 13a) + (-6b + 2b) + (7 + 4)
= 10a - 4b + 11
2.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
2. Hasil perkalian dari (4x - 5)(3x + 3) adalah ....
12x² -3x - 15
12x² +3x - 15
12x² -27x - 15
12x² + 27x + 15
Answer explanation
(4x - 5)(3x + 3)
= 12x² + 12x – 15x – 15
= 12x² – 3x – 15
3.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
3. Bentuk -6x² – x + 4y variabel-variabelnya adalah ....
-6, -1 dan 4
x² , x dan y
x + y
x² – 4y
Answer explanation
Variabel adalah huruf yang ada pada suatu persamaan. Jadi, variabel dari -6x² – x + 4y adalah x² , x dan y.
4.
MULTIPLE CHOICE QUESTION
10 sec • 5 pts
4. Pada bentuk aljabar x² – 2x – 5 koefisien-koefisiennya adalah ....
x²
-2
- 2x dan - 5
-2 dan -5
Answer explanation
Koefisien adalah angka didepan variabel. Jadi, koefisien dari x² – 2x – 5 adalah -2
5.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
5. bentuk aljabar 3a² -7a -9, suku yang merupakan konstanta saja adalah ....
3a²
a
-7
-9
Answer explanation
Konstanta adalah bilangan yang tidak dimuati variabel. Jadi, konstanta dari bentuk 3a² -7a -9 adalah -9.
6.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
6. 8p + 5q dikurangkan dengan 2p – 4q maka hasilnya adalah ....
6p - q
6p + 9q
-6p + q
-6p – 9q
Answer explanation
(8p + 5q)-(2p – 4q)
= (8p – 2p) + (5q + 4q)
= 6p + 9q
7.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
7. Bentuk paling sederhana dari 4(2x – 5y) – 5(x + 3y) adalah ....
3x – 2y
3x – 17y
3x – 5y
3x – 35y
Answer explanation
4(2x – 5y) – 5(x + 3y)
= 8x – 20y – 5x – 15y
= 3x – 35y
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