SOLVING QUADRATIC EQUATION USING THE QUADRATIC FORMULA

The first step in solving quadratic equation by using the quadratic formula is __________.

• Express the given quadratic equation to its standard form.

• Identify the value of a, b, and c

• Use the quadratic formula

The standard form of the quadratic equation 2x^2 = 5x + 7 is ________.

• 2x^2 + 5x + 7 = 0

• 2x^2 - 5x + 7 = 0

• 2x^2 - 5x - 7 = 0

The value of c in the quadratic equation x^2 = 4x - 5 is _____.

• 5

• -5

• 0

 $\frac{2\pm\sqrt{12}}{3}$  is expressed in simplest form.

• TRUE

• FALSE

What is √576?

• 24

• 25

• 26

 $Simplify:\ \sqrt{76}$  

•  $4\sqrt{19}$  

•  $2\sqrt{19}$  
  

•  $19\sqrt{2}$  

Simplify the given expression:    $\frac{6\pm\sqrt{80}}{8}$  

•  $\frac{3\pm4\sqrt{20}}{4}$  

•  $\frac{3\pm2\sqrt{20}}{4}$  

•  $\frac{3\pm2\sqrt{5}}{4}$  

Which of the following is the correct quadratic formula?

• $x\ =\ \frac{b\ \pm\sqrt{b^2-4ac}}{2a}$

• $x\ =\ \frac{-b\pm\sqrt{b^2+4ac}}{2a}$

• $x\ =\ \frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Determine the values of a, b, and c of the given quadratic equation: 4x^2 – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b = -8, c = -3

• a = 4, b = 8, c = 3

Solve using the quadratic formula:

x^2 - 7x + 12 = 0

• x = 3, x = 4

• x = 3, x = -4

• x = -3, x = -4