Without using a calculator, determine the number of real zeros of the function. F (x) = x^3+4x^2+x-6

Question

Mathematics

Araceli Shea

18 August, 14:51

Without using a calculator, determine the number of real zeros of the function. F (x) = x^3+4x^2+x-6

+4

Answers (1)

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Monica Bray · Answer 1

You use rational root theorem here and find that the factors can be {-6,-3,-2,-1, 1, 2, 3,6}

Then you test out all of them and whichever one works you use to factor and then factor as a normal quadratic