Question 1155622
Edge length smaller photograph, x
Edge length larger photograph, x+2


The description sentence,  {{{3x^2=12+(x+2)^2}}}.
Simplify and solve.


.
.
{{{x^2-2x-8=0}}}


{{{(x+2)(x-4)=0}}}


{{{highlight(x=4)}}}



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Question about the 3x^2 comes directly from this part:
"The combined area of <b>3</b> of the smaller photographs is ,..."