Question 1056948
{{{ x^2 - 10x + 8 = 0 }}}
{{{ x^2 - 10x = -8 }}}
{{{ x^2 - 10x + (-10/2)^2 = -8 + (-10/2)^2 }}}
{{{ x^2 - 10x + 25 = -8 + 25 }}}
{{{ x^2 - 10x + 25 = 17 }}}
Now I can multiply both sides by {{{ 4 }}}
{{{ 4x^2 - 40x + 100 = 68 }}}
{{{ ( 2x - 10 )^2 = ( sqrt(68) )^2 }}}
So, I can make the last answer work, I just
would not have multiplied both sides by {{{ 4 }}}