Question 1180326
{{{(2x+5)^2 = 4x(x+5) + 25}}}

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RightSide, {{{4x^2+20x+25}}}
{{{(2x)^2+20x+5^2}}}
{{{(2x)^2+(10+10)x+5^2}}}----------------{{{10=2*5}}}

{{{(2x+5)^2}}}, same as leftside