Выполните умножение (2n+5a)(2n-5a)

Question

Выполните умножение (2n+5a)(2n-5a)

Answer 1

=4n^2-10na+10na-25a^2=4n^2-25a^2

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Answer 2

(2n+5a)(2n-5a)=4n^2-25a^2