Question

RESOLUCION DE LA ECUACION CUADRATICA POR FORMULA GENERAL

X(X-1)=12

Answer 1

Respuesta:

x₁ = 4

x₂ = - 3

Explicación paso a paso:

x ( x - 1 ) = 12

x² - x = 12

x² - x - 12 = 0

a = 1   ;  b = - 1   ;  c = - 12

x₁,₂ = - ( - 1 ) ± √ ( - 1 )² - 4 ( 1 ) ( - 12 ) / 2 ( 1 )

x₁,₂ = 1 ± √ 1 + 48 / 2

x₁,₂ = 1 ± √ 49/2

x₁,₂ = 1 ± 7 / 2

x₁ = 1 + 7 / 2

x₁ = 8/2

x₁ = 4

x₂ = 1 - 7 / 2

x₂ = - 6/2

x₂ = - 3