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persamaan kuadrat

Authored by Martinus Darma Tondok

Mathematics

9th Grade

CCSS covered

Used 234+ times

persamaan kuadrat
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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Diketahui persamaan kuadrat  2x2−12x−8=02x^2-12x-8=0 .  Nilai  x1×x2=...x_1\times x_2=...  

 −4-4  

 44  

 −6-6  

 66  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Diketahui persamaan kuadrat  x2+6x−27=0x^2+6x-27=0   .   Nilai  x1+x2=...x_1+x_2=...  

 −27-27  

 −6-6  

 66  

 2727  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Jika diketahui akar persamaan kuadrat adalah 3 dan 5 maka persamaan kuadratnya adalah…

x2+8x+15=0x^2+8x+15=0

x2−15x+8=0x^2-15x+8=0

x2−8x+15=0x^2-8x+15=0

x2−15x+8=0x^2-15x+8=0

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Persamaan kuadrat yang memiliki akar-akar −1-1   dan 6 adalah…

 x2+4x+12=0x^2+4x+12=0  

 x2−5x+6=0x^2-5x+6=0  

 x2+4x−12=0x^2+4x-12=0  

 x2−5x−6=0x^2-5x-6=0  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Hasil kali akar-akar persamaan kuadrat x2 - 3x-28 =0 adalah ...

28

7

-3

-28

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Jumlah akar-akar persamaan kuadrat x2 +6x-16=0

-16

-6

6

16

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Persamaan kuadrat baru yang akar-akarnya dua kurangnya dari akar-akar persamaan x2−7x+6=0x^2-7x+6=0 , adalah ...

 x2−3x−4=0x^2-3x-4=0  

 x2−3x+4=0x^2-3x+4=0  

 x2+5x+4=0x^2+5x+4=0  

 2x2−5x+4=02x^2-5x+4=0  

 2x2+3x+4=02x^2+3x+4=0  

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