Question 1113767
x, original side


{{{(x+3)^2+x^2=121}}}
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{{{x^2+6x+9+x^2-121=0}}}

{{{2x^2+6x+9-121}}}

{{{2x^2+6x-112=0}}}

{{{x^2+3x-56=0}}}, use quadratic formula solution if this is not factorable.

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