Question

Determine el valor de X si se cumple que:

Answer 1

Respuesta:

Hay dos soluciones:

x = 4

x = -2

Explicación paso a paso:

(x - 2)(x - 4)0 + 7(-2)(-3) + (-1)3(x + 1) - (x + 1)(x - 4)(-3) - (-2)3(x - 2) - 7(-1)0

= 42 - 3(x + 1) +3(x² - 4x + x -4) + 6(x - 2)

= 42 - 3x - 3 + 3x² - 12x + 3x - 12 + 6x - 12

= 3x² - 6x + 15 = 39

=> 3x² - 6x = 24

=> x² - 2x = 8

=> x² - 2x + 1 = 8 + 1

=> (x - 1)² = 9

=> x - 1 = ±3

=>

x = 4

x = -2