Penyelesaian persamaan kuadrat x²+13x+30=0 adalah..
Matematika kelas 9 pts

Quiz
•
Mathematics
•
9th Grade
•
Easy
intan octa
Used 1+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
{10,-3}
{−2,−15}
{-3,-10}
{2,-15}
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diketahui persamaan kuadrat 2x²−12x−8=0.Nilai x1.x2=
-4
4
6
-6
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diketahui salah satu akar persamaan dari 3x² +3x + c = 0 adalah -3. nilai c adalah..
-18
9
18
-9
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Jika diketahui akar persamaan kuadrat adalah 3 dan 5 maka persamaan kuadratnya adalah…
x²+8x+15=0
x²−15x+8=0
x²—8x+15=0
x²+15x+8=0
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Titik puncak dari kurva fungsi kuadrat y=x²+4x−5 adalah …
{—2,—9}
{—4,5}
{2,9}
{4,—3}
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Sumbu simetri dari x²-10x+25 adalah...
10
-10
5
-5
7.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Hasil dari 3√50 —2√18+√98
2√2
8√2
16√2
28√2
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