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di52248
@di52248
June 2022
1
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Выполнить умножение:
(х-1) * (х в квадрате +х+1)
(5m+3n)*(25m в квадрате - 15mn + 9n в квадрате)
Заранее спасибо
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1401Tamara
(х-1) * (х^2 +х+1)= x^3 - x^2 + x^2 - x + x -1 = x^3 - 1
(5m+3n)*(25m^2-15mn+9n^2)=125m^3+75m^2n-75m^2n-45mn^2+45mn^2+27n^3
= 125m^3 + 27n^3
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Answers & Comments
(5m+3n)*(25m^2-15mn+9n^2)=125m^3+75m^2n-75m^2n-45mn^2+45mn^2+27n^3
= 125m^3 + 27n^3