Question 1033565
Square left and right members.


{{{x^2+10x-3=4x^2}}}


Simplify.
{{{x^2-4x^2+10x-3=0}}}
{{{-3x^2+10x-3=0}}}
{{{3x^2-10x+3=0}}}


Find the discriminant in preparation for general solution formula of quadratic equation.
{{{D=100-4*3*3}}}
{{{D=100-36}}}
{{{D=64}}}
{{{D=8^2}}}


General Solution Formula...
{{{x=(10+- 8)/6}}}
{{{x=(5+- 4)/3}}}
{{{highlight_green(system(x=1/3,or,x=3))}}}
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Still not finished.  
Will any of these work in the original equation?



PARTIAL CHECK:
Try x at 3.
{{{sqrt(3^2+10*3-3)=2*3}}}
{{{sqrt(9+30-3)=6}}}
{{{sqrt(36)=6}}}-------That one seems to work.  {{{highlight(x=3)}}} is good.
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Now you still need to check if {{{x=1/3}}} will work.