(a^2-b^2)(a^2 +b^2) - (a^2-b^2)​

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Answers 1

Answer:

1

Step-by-step explanation:

(a^2 - b^2)× (a^2 + b^2) - (a^2 - b^2)

= cutting the square

= a-b×a+b-a-b

cut the -b to +b

= a×a-b

=a^2-b

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