Question

please explain completing square method ​

Answer 1

Answer:

Completing the Square is a method used to solve a quadratic equation.

Step-by-step explanation:

for example take an equation:

x^2 – 4x – 8 = 0

x^2 – 4x = 8

Then I square this value to get +4, and add this squared value to both sides of the equation:

x^2 – 4x + 4 = 8 + 4

x^2 – 4x + 4 = 12

I get the square-rootable equation:

(x – 2)^2 = 12

Now I can square-root both sides of the equation, simplify, and solve:

(x – 2)^2 = 12

√(x-2)^2=+_ 12

x-2=+_√4×3

x-2=2√3

x=2+_2√3

Using this method, I get the same answer as I had before.

hope this helps you.

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