Question

simplifique a expressão (a+b)^2 (a-b)^2 / (a^2-b^2)^2

Answer 1

 (a+b)²-(a+b)(a-b)-2ab+2(a-b)² 
a²+2ab+b²-(a²-b²)-2ab+2(a²-2ab+b²) 
a²+2ab+b²-a²+b²-2ab+2a²-4ab+2b² 
2a²-4ab+4b² (divide por 2)