Question

Resolver: x(x + 15 ) + 13 = (x+7)(x+2)

Answer 1

Respuesta:

1/6

Explicación paso a paso:

$x^{2}$+15x+13=$x^{2}$+2x+7x+14

6x=1

x=1/6

Answer 2

Respuesta:

$x(x + 15) + 13 = (x + 7)(x + 2) \\ x ^{2} + 15x + 13 = x^{2} + 2x + 7x + 14 \\ x^{2} + 15x + 13 = x^{2} + 9x + 14 \\ 15x + 13 = 9x + 14 \\ 15x = 9x + 14 - 13 \\ 15x = 9x + 1 \\ 15x - 9x = 1 \\ 6x = 1 \\ x = \frac{1}{6} \\ x = 6$