Question 308520
solve the following: x^2 - 4x - 3 = 0
:
We can solve this by completing the square
x^2 - 4x + ___ = 3
:
x^2 - 4x + 4 = 3 + 4
:
(x-2)^2 = 7
:
x - 2 = +/-{{{sqrt(7)}}}
Two solutions
x = 2 + {{{sqrt(7)}}}
and
x = 2 - {{{sqrt(7)}}}