IAmPidgetto IAmPidgetto
  • 21-09-2016
  • Mathematics
contestada

find the value of this expression if x=4 x^2-4/x-8

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 22-09-2016
x = 4 + (x^2 - 4) / (x - 8)
x(x - 8) = 4(x - 8) + x^2 - 4
x^2 - 8x = 4x - 32 + x^2 - 4
-8x - 4x = -32 - 4
-12x = -36
x = -36/-12
x = 3
Answer Link

Otras preguntas

∆ABC is a right angled at B and D is a point on BC if AD = 18cm BD = 9cm and CD =4cm Find AC
The development of tools with handles was useful for farming and growing crops. True or False
Who does the author compare the star to in a winter twlight
Original price $325.50 ; mark down: 15%
what is 45+98 I need some help
Simplify the expression.  6 + (14 – 6) • 3 + 2 • 3
What is the solution to the proportion? a. m = 2.4 b. m = 3.75 c. m = 4.5 d. m = 4.75
Martin finds a shirt on sale for 10% of at a departnment store. The original price was $20. Martin must also pay 8.5% tax. How much is the shirt before taxes ar
What us 12 divided by 360°?
Which underlined phrase is an adjective phrase? a. baking [with my mother] makes me very happy. b. sweet potato pie is [my specialty]. c. the cookies smell [