Question

Представьте в виде многочлена (5a-1)(5a+1)

Answer 1

(5a-1)(5a+1)=25a²+5a-5a-1=25a²-1

Answer 2

(5a-1)(5a+1)  =
= 25a^2 + 5a - 5a - 1 =
= 25a^2 - 1
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