lakhtar99 lakhtar99
  • 17-08-2014
  • Mathematics
contestada

Plz can someone help I have tried this question so many times. Thanks

Plz can someone help I have tried this question so many times Thanks class=

Respuesta :

konrad509
konrad509 konrad509
  • 17-08-2014
[tex]\frac{3}{x-2}+\frac{x}{x+1}=2\\ x\not=2 \wedge x\not=-1\\ 3(x+1)+x(x-2)=2(x-2)(x+1)\\ 3x+3+x^2-2x=2(x^2+x-2x-2)\\ x^2+x+3=2x^2-2x-4\\ x^2-3x-7=0\\ \Delta=(-3)^2-4\cdot1\cdot(-7)=9+28=37\\ x_1=\frac{-(-3)-\sqrt{37}}{2\cdot1}=\frac{3-\sqrt{37}}{2}\\ x_2=\frac{-(-3)+\sqrt{37}}{2\cdot1}=\frac{3+\sqrt{37}}{2}\\ [/tex]
Answer Link

Otras preguntas

(a) what's the meaning
A student finished 8 of her homework problems in class. If the ratio of problems she finished to problems she still had left was 4:1, how many homework problems
Holly chooses seven out of nine plants for the front of her house with the remaining plants to be used on the side of the house. if order does not matter, in ho
Which element will have a greater chance of a momentary dipole neon or krypton?
What is 6.25 in fraction form without simplifiying?
Amanda's computer weighs 56 ounces. how many pounds does it weigh?
two numbers add up to 50.One number is four times as big at the other number.What are the two numbers?
what was the AVERAGE cost of gasoline in the U.S. in 2006, 2007, 2008, and 2009.
A person who studies ancient cultures is a(n): A : anthropologist B : archaeologist C : geologist D : linguist
Which society introduced an alphabet that would later become the basis for the greek alphabet? chaldeans assyrians phoenicians hittiteswhich society introduced