Question 287372
{{{(x+c)^2=x^2+2cx+c^2}}}
In your case, 
{{{ c^2=36/25 }}}
{{{b=2c}}}
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{{{c1=6/5}}}
{{{c2=-6/5}}}
{{{b1=2*c1=12/5}}}
{{{b2=2*c2=-12/5}}}