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raisara
@raisara
July 2022
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31^3+19^3/50 -31*19 вычислить применяя формулу сокращенного умножения
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yugolovin
Verified answer
(31^3+19^3)/50-31·19=
(31+19)(31^2-31·19+19^2)/50-31·19=
31^2-31·19+19^2-31·19=
31^2-2
·
31·19+19^2=
(31-19)^2=
12^2=
144
Ответ: 144
10 votes
Thanks 15
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Answers & Comments
Verified answer
(31^3+19^3)/50-31·19=(31+19)(31^2-31·19+19^2)/50-31·19=
31^2-31·19+19^2-31·19=
31^2-2·31·19+19^2=
(31-19)^2=
12^2=
144
Ответ: 144