aldape06252004
20.11.2021 •
Mathematics
The cube less the square of a number is twice the number. If x is a positive integer, what is its value
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Ответ:
2
Step-by-step explanation:
let 'x' = number
x³ - x² = 2x
x³- x² - 2x = 0
x(x² - x - 2) = 0
x(x - 2)(x + 1) = 0
x = -1, 0, 2
the only positive solution is the number 2
Ответ: