Question 384115
OK, the solution is on the website also.
{{{7x^2-14x+3=0}}}
{{{7(x^2-2x)+3=0}}}
{{{7(x^2-2x+1)+3-7(1)=0}}}
{{{7(x-1)^2+3-7=0}}}
{{{7(x-1)^2-4=0}}}
{{{7(x-1)^2=4}}}
{{{(x-1)^2=4/7}}}
{{{x-1=0 +- sqrt(4/7)}}}
{{{highlight(x=1 +- (2/7)sqrt(7)))}}}