solve by completing the square ??
first divide by 2 and move the constant to the right ...
x^2 - 2x = 1
add 1 to both sides
x^2 - 2x + 1 = 1 + 1
(x-1)^2 = 2
x-1 = ± √2
x = 1 ± √2
complete the square
2x^2-4x-1=0
1 answer
1 answer