Answer:
see the explanation
Step-by-step explanation:
The complete question is
The first three steps of completing the square to solve the quadratic equation x2 +4x -6= 0, are shown below.
Step 1: x2 +4x= 6
Step 2: x2 +4x+4=6+4
Step 3: (x +2)^2=10
What are the next 3 steps?
we have
step 4
Take square root both sides
[tex]\sqrt{(x+2)^2} =\sqrt{10}[/tex]
step 5
Simplify
[tex]x+2=\pm\sqrt{10}[/tex]
step 6
Solve for x
subtract 2 both sides
[tex]x=-2\pm\sqrt{10}[/tex]
[tex]x_1=-2+\sqrt{10}[/tex]
[tex]x_2=-2-\sqrt{10}[/tex]
