Question

Indica la suma de raíces luego de resolver: x(x – 1) = 10(x + 8)

Answer 1

Respuesta:

x1 + x2 = 11

x1 = 16

x2 = -5

Explicación:

x(x – 1) = 10(x + 8)

x² - x = 10x + 80

x² - x - 10x - 80 = 0

x² - 11x - 80 = 0

Suma de raíces

x1 + x2 = -b / a

x1 + x2 = -(-11)= / 1

x1 + x2 = 11

x² - 11x - 80 = 0

(x - 16)(x + 5) = 0

x - 16 = 0

x = 16

x +5 = 0

x = -5

Answer 2

Respuesta:

Explicación:

x1 + x2 = 11

x1 = 16

x2 = -5