Could someone help me rn ?!

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.