SOLUTION: How do I find the solution to this equation by completing the square: x^2-4x-8=0 Thank you for the help.

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: How do I find the solution to this equation by completing the square: x^2-4x-8=0 Thank you for the help.       Log On

 = 0,

 = 0,     ( <--- add 4 and distract 4; then group )

 = 0,  --->

 = 12,

x-2 = +/- = +/-,

x = 2 +/-.