Question 114954
{{{y^2 - 24y  = -144}}}
{{{y^2-24y+144=0}}}


Factoring,

{{{(y-12)^2=0}}}
{{{sqrt((y-12)^2)=sqrt(0)}}}
{{{y-12=0}}}
{{{y-12+12=0+12}}}
{{{y+0=12}}}
{{{y=12}}}


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