MATHEMATICS FORM 4 KSSM

Diberi bahawa salah satu punca bagi persamaan kuadratik

$3x^2+8x-3=0\$ ialah $\frac{1}{3}$ .Cari satu punca yang lain.
Given that the one of the roots of the quadratic equation $3x^2+8x-3=0\$ is $\frac{1}{3}$ .Find the other root.

• 3

• -3

• 1

• -5

Diberi/Given

 $\frac{7n^2+3n}{2n+1}=5$  
Nyatakan  nilai a, b dan c dalam  $an^2+bn+c$  
State the values of a, b and c in  $an^2+bn+c$ 

• a=-7  b=-7  c=-5

• a=7  b=-7  c=5

• a=7  b=-7  c=-5

• a=-7  b=7  c=5

Rajah menunjukkan graf bagi fungsi  $f\left(x\right)=h+x+x^n$  .

Diagram shows the graph of function   $f\left(x\right)=h+x+x^n$  .

Cari nilai h dan nilai n.
Find the value of h and n.

• h =-6 ,n = 2

• h =-6 ,n = -2

• h =-6 ,n = 3

• h =-3 ,n = 2

Antara berikut ,yang  bukan persamaan kuadratik?
Which of the following is not a quadratic equation?

•  $x^{-2}+2x=0$  

•  $x^2-1=0$  

•  $11x^2+2x=4$  

•  $\frac{x^2}{4}+1=0$  

 $\left(x-1\right)^2=5^2$  

Cari punca -punca persamaan tersebut.

Find the roots of the given equation

• -6 and 4

• -2 and 3

• -4 and 6

• -3 and 2

Cari punca bagi persamaan kuadratik:
Find the roots of the quadratic equation:

 $\left(x+6\right)\left(x-3\right)=x-15$ 

• -6 and 3

• -3 and 1

• -3 and 3

• -6 and 1

Antara berikut, yang manakah mewakili fungsi kuadratik
Which of the following represents the quadratic function
 $f\left(x\right)=-2x^2-6$ 

• 
• 
• 
• 

Rajah menunjukkan sebuah graf 

 $y=2x^2+bx+c$  dengan paksi simetri,  $x=3$  .
Diagram shows a graph of $y=2x^2+bx+c$  with an axis of symmetry  $x=3$  
Cari nilai b

Find the value of b

• -12

• -6

• 0

• 10

 $6x^2-5x+1=0$  

Apakah hasil tambah punca bagi fungsi kuadratik di atas?

What is the sum of roots of the quadratic equation given above?

•  $\frac{5}{6}$  

•  $\frac{1}{6}$  

• 5

• 6

 $f\left(x\right)=-x^2+6x=6$  

Cari koordinat bagi titik maksimum fungsi kuadratik di atas.

Find the coordinate of the maximum point of the quadratic function given above.

•  $\left(-3,6\right)$  

•  $\left(-6,1\right)$  

•  $\left(6,6\right)$  

•  $\left(3,15\right)$