Question

Help me:(
y ( -1-y ) - 1 ( y-( -1 ))= -4

Answer 1

Respuesta:

y = 1   ∧ y = -3

Explicación paso a paso:

y ( -1-y ) - 1 ( y-( -1 ))= -4

-y -y² - 1 ( y + 1)= -4

-y -y² -y -1= -4

-y² -2y -1= -4

-y² -2y + 4 - 1 = 0

-y² -2y +3= 0

0 = y² + 2y - 3

0 = ( y + 3) ( y - 1 )

0 = ( y + 3)

y = -3

0 = ( y - 1 )

y = 1