Solving Quadratic Equations: Completing the Square
View the Lesson | MATHguide homepage Updated May 18th, 2017


Status: Waiting for your answers.

    Using the partially completed work below, solve the equation x2 - 10x + 16 = 0 by completing the square.

 x2 - 10x + 16 =   0
Step 1:x2 - 10x            =   
Step 2: x2 - 10x + =   
Step 3: (x - )2 =   
Step 4: x - = + 
Step 5: x = +
Step 6: x1

x2
=

=
- = 2

+ = 8