Respuesta:
espero y te sirva,,,,,,,,,,,,,,,,,,,,,
x = -1/9
Explicación paso a paso:
a³ - b³ = (a - b)(a² + ab + b²)
(x + 1)³ - (x - 1)³ = 6x(x - 3)
[x + 1 - (x - 1)][(x + 1)² + (x + 1)(x - 1) + (x - 1)²] = 6x² - 18x
(x + 1 - x + 1)(x² + 2x + 1 + x² - 1 + x² - 2x + 1) = 6x² - 18x
2(3x² + 1) = 6x² - 18x
3x² + 1 = 3x² - 9x
9x = -1
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Respuesta:
espero y te sirva,,,,,,,,,,,,,,,,,,,,,
Verified answer
Respuesta:
x = -1/9
Explicación paso a paso:
a³ - b³ = (a - b)(a² + ab + b²)
(x + 1)³ - (x - 1)³ = 6x(x - 3)
[x + 1 - (x - 1)][(x + 1)² + (x + 1)(x - 1) + (x - 1)²] = 6x² - 18x
(x + 1 - x + 1)(x² + 2x + 1 + x² - 1 + x² - 2x + 1) = 6x² - 18x
2(3x² + 1) = 6x² - 18x
3x² + 1 = 3x² - 9x
9x = -1
x = -1/9