camillexv8430 camillexv8430
  • 17-11-2021
  • Mathematics
contestada

The cube less the square of a number is twice the number. If x is a positive integer, what is its value

Respuesta :

clarch19
clarch19 clarch19
  • 18-11-2021

Answer:

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

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