Descompuneti in factori a^4-b^4 repede va rog


Răspuns :

a⁴-b⁴ =(a²+b²)(a²-b²)=(a²+b²)(a-b)(a+b)

a⁴ - b⁴ =

= (a² + b²)·( a ²- b²)

= (a²+b²)·(a-b)·(a+b)