Question 839488
{{{(a^2-b^2)=(a-b)(a+b)}}}, well-known formula for difference of two squares.


Your expression, {{{(x-3)^2-49}}} is the difference of two squares.
{{{highlight_green(((x-3)-7)((x-3)+7))}}} Now factored; and it can also be simplified:


{{{(x-3-7)(x-3+7)}}}
{{{highlight((x-10)(x+4))}}} should also be acceptable, since it is equivalent.