Ответ:
(X-1/7) * (X-1/3) = 0
X^2 - 1/3X - 1/7X + 1/21 = 0
X^2*(7/21+3/21)X + 1/21 = 0
X^2 - 10/21X + 1/21= 0
21 * (21X^2 - 10X + 1) = 0
Ответ. 21X^2 - 10X + 1 = 0
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Ответ:
(X-1/7) * (X-1/3) = 0
X^2 - 1/3X - 1/7X + 1/21 = 0
X^2*(7/21+3/21)X + 1/21 = 0
X^2 - 10/21X + 1/21= 0
21 * (21X^2 - 10X + 1) = 0
Ответ. 21X^2 - 10X + 1 = 0