younoussamaigaoqw90f younoussamaigaoqw90f
  • 12-06-2017
  • Mathematics
contestada

For which rational expression is –2 an excluded value of x?

a) x-3/x^2-4
b) x-3/x^2+4
c) x^2-4/x-3
d) x^2+4/x-3

Respuesta :

octobermaniac
octobermaniac octobermaniac
  • 13-06-2017
Answer is A 
X-3/x^2-4 has two excluded values 2, -2
Answer Link

Otras preguntas

Which of the following is a factor of the polynomial 2x^2 – 3x – 5 ? F. x – 1 G. 2x – 3 H. 2x – 5 J. 2x + 5 K. 3x + 5
Why the people consuming sea food do not suffer from goiter
John will be x in 7 years. How old was he last year? A: x + 7 B: 1 - x - 7 C: x + 8 D: x - 8
If r = 9, b = 5, and g = −6, what does (r + b − g)(b + g) equal? F. −20 G. 0−8 H. 0 8 J. 19 K. 20
what is blank divided by three plus ten equal to fourteen
solve the equation 4x^2-17x-15=0
How much water should be added to 18ml of 10% alcohol solution  to reduce to reduce the concentration to 9%
Find all real numbers x such that x^4 ≤ 8x^2 − 16.
A circle has a circumference of 16'pi' feet. What is the radius of the circle, in feet? A. square root of 8 B. 4 C. 8 D. 16 E. 32
Please explain how biotechnology can increase or decrease variation???