Post a New Question

algeb collage

posted by on .

solve the inequality,express using interval notation


  • algeb collage - ,

    First factor it and rewrite as
    x (x-7)(x+2) > 0

    The function crosses the y axis at x = -2, x=0 and x=7

    When x<-2 all three factors are negative, so the function is <0 there

    The -2<x<0, two factors are negative and one is postive, so the inequality is satisfied.

    Cosider also the regions 0<x<7 and x>7 and figure out if the fucntiuon is postive or negative there.

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question