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jazminisaracissa
jazminisaracissa jazminisaracissa
  • 29-05-2016
  • Mathematics
Answered

Solve. 8/x + 15/x^2 = -1


A.

x= 5,-3


B.

x= -5,-3


C.

x= -5,3


D.

x=5,3

Verified Answer :

ANCKPOP
ANCKPOP ANCKPOP
  • 29-05-2016

8/x + 15/x^2 = -1
(8x+15)/x^2 = -1
8x + 15 = -1*x^2
8x + 15 = -x^2
x^2 + 8x + 15 = 0
(x+5)(x+3) = 0
x+5=0   ................     x+3=0
x = -5  .....................  x = -3

saludos :)

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