KSSM ADDMATH F4 (CHAPTER 2) by Cikgu Nizam<3

Which of the following method is used to solve Example 1 from the given solution?

• Factoring

• Completing the squares

• Quadratic Formula

• Graphing

Tags

CCSS.HSA-REI.B.4B

Find the quadratic equation from the given roots

Roots:  $3,\ \frac{-1}{2}$  

•  $2x^2-5x-3=0$  

•  $3x^2-2x-5=0$  

•  $5x^2-2x-3=0$  

•  $3x^2-5x-2=0$  

Find the range of values of x.

 $x^2+7x>8$  

•  $x<1\ or\ x>-8$  

•  $-8<x<1$  

•  $x<-1\ or\ x>8$  

•  $x<-8\ or\ x>1$  

Find the range of values of m if the quadratic equation has TWO DIFFERENT REAL ROOTS.

 $2x^2+6x+5=m$  

•  $m>\frac{1}{2}$  

•  $m>\frac{-1}{2}$  

•  $m<\frac{1}{2}$  

•  $m<\frac{-1}{2}$  

Find the range of values of n if the quadratic equation has TWO EQUAL REAL ROOTS.

 $2x^2+3x+6=n$  

•  $n=\frac{-39}{8}$  

•  $n=\frac{39}{8}$  

•  $n<\frac{-39}{8}$  

•  $n<\frac{39}{8}$  

Determine whether the graph of the following quadratic function has a max point or min point or none.

 $f\left(x\right)=2x-4x^2-3$  

• Max point

• Min point

• None

Find the range of values of p if the curve of the quadratic function below intersects with the x-axis at TWO DIFFERENT POINTS.

 $f\left(x\right)=3x^2-2x+p-5$  

•  $p<\frac{16}{3}$  

•  $p<\frac{-16}{3}$  

•  $p>\frac{16}{3}$  

•  $p>\frac{-16}{3}$  

Find the value of q if the curve of the quadratic function below intersects with the x-axis at ONE POINT ONLY..

 $f\left(x\right)=qx^2+3x+6$  

•  $q=\frac{8}{3}$  

•  $q=\frac{-8}{3}$  

•  $q=\frac{-3}{8}$  

•  $q=\frac{3}{8}$  

Tags

CCSS.HSF-IF.C.7A

By using the method of completing the squares or formula -b/2a, state the coordinate of the vertex of the following function.

 $f\left(x\right)=2x^2-7x-4$  

•  $\left(\frac{-7}{4},\frac{81}{8}\right)\$  min vertex

•  $\left(\frac{-7}{4},\frac{81}{8}\right)\$  max vertex

•  $\left(\frac{7}{4},\frac{-81}{8}\right)$  min vertex

•  $\left(\frac{7}{4},\frac{-81}{8}\right)$  max vertex

By using the method of completing the squares or formula -b/2a, state the coordinate of the vertex of the following function.

 $f\left(x\right)=-x^2-8x+13$  

• min vertex $\left(-4,29\right)$  

• max vertex $\left(-4,29\right)$  

• min vertex $\left(29,-4\right)$  

• max vertex $\left(29,-4\right)$