Question 31070
LET X BWE THE SIDE OF THE ORIGINAL PICTURE AND X+4 BE THE SIDE OF THE BORDER
THEN (X+4)~2-X~2=96 OR X~2+8X+16-X~2=96 OR 8X+16=96 OR 8X=80 OR X=10
PROOF (10+4)~2-10~2=96 OR 14~2-10~2=96 OR 196-100=96 OR 96=96