madisonmcph madisonmcph
  • 18-01-2017
  • Mathematics
contestada

What are the solutions of the equation x6 – 9x3 + 8 = 0? Use u substitution to solve

Respuesta :

Аноним Аноним
  • 01-02-2017
x6 – 9x3 + 8 = 0
let u = x^3
u^2 - 9u + 8 = 0 
(u-8)(u-1) = 0
u = 1,8
back substitute 
1 = x^3
8 = x^3

x = 1 , 2
Answer Link

Otras preguntas

How did the Supreme Court ruling in the McCulloch v. Maryland case help strengthen the federal government? 1 It ruled that state laws could not undermine a fede
What was the main reason for the conflict between China and Britain?
Read this excerpt from Emily Dickinson's “There Is Another Sky.” Which two lines show that the poem is addressed to a person the speaker knows well? There is an
i really don't get this type of math so can someone please help me with this thank you
describe the war of 1812
Which is the graph of the parent function f(x)=|x|?
Which of the following foods is one of the "seeds of change"? Pumpkins Chocolate Potatoes Onions
Janet is worried about her son, patrick. she finds him restless and impulsive. at times, janet finds it exhausting to handle him because he is high-strung and s
What is a medium? a method of measurement a means of communication a message a group
what term describes a substance that has a positive and negative region in a molecule