Nevada554 Nevada554
  • 11-06-2014
  • Mathematics
contestada

Find all real numbers x such that
x^4 ≤ 8x^2 − 16.

Respuesta :

konrad509
konrad509 konrad509
  • 11-06-2014
[tex] x^4 \leq 8x^2 -16\\ x^4-8x^2+16\leq0\\ (x^2-4)^2\leq0\\ x^2-4=0\\ x^2=4\\ x=-2 \vee x=2[/tex]
Answer Link

Otras preguntas

Find four consecutive odd integers whose sum is 56
what direction would you travel to go from seoul to shanghai?
Find four consecutive odd integers whose sum is 56
Describe how cities brought about change at the dawn of the Renaissance?
Can I write a narrative writing how the first time I fell in love with blue eyes?
Which of the following is true of an electrolytic cell?  a. An electric current causes an otherwise non-spontaneous chemical reaction to occur.  b. Reduction o
What r  All of the prime numbers
All the life processes together are its?
A go-Kart's top speed is 607,200 feet per hour. What is the speed in miles per hour?
A painter can finish painting a house in 8 hours. Her assistant takes 10 hours to finish the same job. How long would it take them to complete the job if they