Предмет: Алгебра, автор: ntvbr11

(3-x)(19x-1)=(3-x)^2

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Автор ответа: GreatFilter

0

(3-x)(19x-1)=(3-x)²
(3-x)(19x-1)=(3-x)(3-x)
19x-1=3-x
19x+x=3+1
20x=4
x=4/20
x=0.2

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