Question

Approximate the real number solutions to the polynomial function f(x) = x3 – 2x2 – 16x + 32 .

Answer 1

you can factor this by grouping

--> (x^3-2x^2)+(-16x+32)
-->x^2(x-2)-16(x-2)
--> (x-2)(x^2-16)
Now set it equal to zero to find the 3 solutions