Question 1149665
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{{{a-b = a(1-b/a)}}}
{{{(a-b)^2 = (a^2)(1-b/a)^2}}}
{{{(a-b)^2 = (a^2)(1-2b/a+b^2/a^2)}}}
{{{log((a-b))^2 = log(((a^2)(1-2b/a+b^2/a^2)))}}}
{{{log((a-b))^2 = 2*log((a))+log((1-2b/a+b^2/a^2))}}}<br>