1.

(a^2+b^2) (-a^2+b^2) ​

Answer»

ong>Answer:

(a+b)(a-b)(a²+b²-(a-b)(a+b)]

Step-by-step EXPLANATION:

  (a² - b²)(a²+b²) - (a² - b²)²

= (a²-b²) [a² + b² - (a²-b²)]

= (a+b)(a-b)(a²+b²-(a-b)(a+b)]

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