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PERSAMAAN DAN FUNGSI KUADRAT

Authored by Soejay 741

Mathematics

1st Grade

Used 905+ times

PERSAMAAN DAN FUNGSI KUADRAT
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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Titik balik grafik fungsi kuadrat  y=2x2+4x−3y=2x^2+4x-3  adalah ....

( -1,-5 )

( -1,5 )

( 1,-5 )

( -5,1 )

( 5,-1 )

2.

MULTIPLE CHOICE QUESTION

2 mins • 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, − 10 }\left\{\ -2,\ -\ 10\ \right\}  

3.

MULTIPLE CHOICE QUESTION

30 sec • 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  

 −21-21  

4.

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

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

5.

MULTIPLE CHOICE QUESTION

3 mins • 12 pts

Nilai  dari persamaan kuadrat  x12+x22x_1^2+x_2^2  dari persamaan kuadrat  x2−3x−18=0x^2-3x-18=0  adalah...

30

35

40

45

50

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Sumbu simetri kurva fungsi  y=x2−8x+12y=x^2-8x+12  kuadrat  adalah …

 x=2x=2  

 x=−3x=-3  

 x=4x=4  

 x=−5x=-5  

 x = 3x\ =\ 3  

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Titik puncak dari kurva fungsi kuadrat                      y=x2+4x−5y=x^2+4x-5   adalah …

 (−2,−9)\left(-2,-9\right)  

 (−4,5)\left(-4,5\right)  

 (2,9)\left(2,9\right)  

 (4,−3)\left(4,-3\right)  

 (−2,−5)\left(-2,-5\right)  

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