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Respuestas a la pregunta
Respuesta:
C
Explicación paso a paso:
(x+3)^2 x-1 2(7x+1)
___________ = ____ + ______
x^2-2(x)(3)+3^2 x+1 x^2-2x-3
(x+3)^2 x-1 2(7x+1)
_______ = __ + _______
(x-3)^2 x+1 x^2-2x-3
(x+3)^2 x-1 2(7x+1)
_______ = ___ + _______
(x-3)^2 x+1 (x-3)(x+1)
(x-3)^2 (x+1)
_________ = (x-1)(x-3) + 2(7x+1)
x-3
(x-3)^2 (x+1)
_________ = x^2 + 10x + 5
x-3
(x-3)^2 (x+1) = (x^2 + 10x + 5)(x-3)
x^3 + x^2 + 6x^2 + 6x + 9x + 9 = x^3 - 3x^2 + 10x^2 - 30x + 5x - 15
x^3 + 7x^2 + 15x + 9 = x^3 - 3x^2 + 10x^2 - 30x + 5x - 15
x^3 + 7x^2 + 15x + 9 = x^3 + 7x^2 - 25x - 15
7x^2 + 15x + 9 = 7x^2 - 25x - 15
15x + 9 = -25x - 15
15x + 9 + 25x = -15
40x + 9 = -15
40x = -15 - 9
40x= -24
x = 24
- __
40
x= 3
- __
5