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xmen01
@xmen01
July 2022
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система уравнений а2+а4=16
а1*а5=28
по заданному составьте арифметическую прогрессию
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maksimkaignato
A(1)+d+a(1)+3d=16
a(1)*(a(1)+4d)=28
2a(1)+4d=16
a(1)+2d=8
a(1)=8-2d
(8-2d)^2+4d*(8-2d)=28
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xmen01
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Answers & Comments
a(1)*(a(1)+4d)=28
2a(1)+4d=16
a(1)+2d=8
a(1)=8-2d
(8-2d)^2+4d*(8-2d)=28