Algebra

Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation
x^3+x^2+16x+16>0
What is the solution set?
(Type your answer in interval notation.)


qaz

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asked by edward
  1. it helps if you can find the roots of the function. In this case, you have

    y=(x+1)(x^2+16)


    So, you know the graph crosses the x-axis only at x = -1.

    Since the 2nd factor is always positive, y>0 where (x+1) > 0.

    Think you can take it from there?

    posted by Steve

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