SOLUTION: Given f(x)=x^2 * (x-7) - 16 * (x-7), solve f(x) is greater than or equal to 0 . Express your answer using interval notation.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: Given f(x)=x^2 * (x-7) - 16 * (x-7), solve f(x) is greater than or equal to 0 . Express your answer using interval notation.      Log On


   

Question 99678: Given f(x)=x^2 * (x-7) - 16 * (x-7), solve f(x) is greater than or equal to 0 .
Express your answer using interval notation.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 * (x-7) - 16 * (x-7)>=0
x^3-7x^2-16x+112>=0
factor (x-7)(x-4)(x+4)>=0
X[-4,4]U[7,infinity)
graph%28500%2C500%2C-10%2C10%2C-150%2C150%2Cx%5E3-7x%5E2-16x%2B112%29
Ed