UH 2 PERSAMAAN KUADRAT DAN FUNGSI KUADRAT

UH 2 PERSAMAAN KUADRAT DAN FUNGSI KUADRAT

9th Grade

10 Qs

quiz-placeholder

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UH 2 PERSAMAAN KUADRAT DAN FUNGSI KUADRAT

UH 2 PERSAMAAN KUADRAT DAN FUNGSI KUADRAT

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

Created by

Asminingsih Yusuf

Used 232+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Akar - akar dari persamaan kuadrat          x2+13x+30=0x^2+13x+30=0  adalah…

 {10,3}\left\{10,-3\right\}  

 {2,15}\left\{-2,-15\right\}  

 {2,15}\left\{2,-15\right\}  

 {3,10}\left\{-3,-10\right\}  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

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

x215x+8=0x^2-15x+8=0

x28x+15=0x^2-8x+15=0

x215x+8=0x^2-15x+8=0

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sumbu simetri kurva fungsi  y=x28x+12y=x^2-8x+12  kuadrat  adalah …

 x=2x=2  

 x=3x=-3  

 x=4x=4  

 x = 3x\ =\ 3  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nilai a, b, dan ca,\ b,\ dan\ c dari persamaan kuadrat  2x26x+8=02x^2-6x+8=0  adalah…

 a=6, b=2, c=8a=-6,\ b=2,\ c=8  

 a=8, b=6, c=2a=8,\ b=-6,\ c=2  

 a=2, b=6, c=8a=2,\ b=-6,\ c=8  

 a=2, b=6, c=8a=2,\ b=6,\ c=8  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Akar-akar dari persamaan kuadrat  x210x+24=0x^2-10x+24=0   adalah…

 x=6  atau x=4x=-6\ \ atau\ x=-4  

 x=2  atau x=12x=-2\ \ atau\ x=-12  

 x=12  atau x=2x=12\ \ atau\ x=2  

 x=6  atau x=4x=6\ \ atau\ x=4  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Rumus fungsi kuadrat pada gambar tersebut adalah ... .

f(x) = -2x2 + 4x + 6

f(x) = -2x2 - 4x + 6

f(x) = -2x2 + 4x - 6

f(x) = -2x2 - 4x - 6

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Sebuah fungsi kuadrat melalui titik puncak (2,0). Jika fungsi kuadrat tersebut melalui titik (0,4), maka persamaan fungsi kuadrat tersebut adalah....

f(x)=x2 + 4x + 4

f(x)=x2 - 4x + 4

f(x)=x2 - 4x - 4

f(x)=x2 + 2x + 4

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