Answer
$c=0, 5$
Work Step by Step
$c^2=5c$
$c^2-5c=5c-5c$
$c^2-5c=0$
$c(c-5) = 0$
$c =0$
$c-5=0$
$c-5+5 = 0+5$
$c = 5$
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