Question 36946
Let the number be x
so half the number is (x/2)


And so {{{ x^2 - (x/2)^2 = 108 }}}
{{{ x^2 - x^2/4 = 108 }}}
{{{ (3x^2)/4 = 108 }}}
{{{ 3x^2 = 432 }}}
{{{ x^2 = 144 }}}
{{{ x = sqrt(144) }}} or {{{ x = - sqrt(144) }}}
x = 12 or x = -12


jon.