A^2-b^2+ x^2-y^2 +2ax+ 2 by помощь

Question

A^2-b^2+ x^2-y^2 +2ax+ 2 by
помощь

Answer 1

A²-b²+x²-y²+2ax+2by=(a+x)²-(b+y)²=(a+x+b+y)(a+x-b-y)