scottmn
contestada

PLEASE HELP
What is the difference ? x+5/x+2 -x+1/x^2+2x
A. x^2+4x-1/x(x+2)
B. x^2+4x+1/x(x+2)
C. 4/-1(x^2+x-2)
D. x^2+6x+1/x(x+2)

Respuesta :

Answer:

  A. (x^2+4x-1)/(x(x+2))

Step-by-step explanation:

[tex]\dfrac{x+5}{x+2}-\dfrac{x+1}{x^2+2x}=\dfrac{x(x+5)}{x(x+2)}-\dfrac{x+1}{x(x+2)}=\dfrac{x(x+5)-(x+1)}{x(x+2)}\\\\=\dfrac{x^2+5x-x-1}{x(x+2)}=\dfrac{x^2+4x-1}{x(x+2)}[/tex]

... matches choice A.