Question

Function f(x) = x^3 + x^2 - 2x.
Use trace or a table to estimate positive x-value where f(x) = 2.5. Round to nearest tenth.

Answer 1

2.5(2.5^2+2.5-2) = f(x) when x is 2.5

Answer 2

so f(2.5) = 16.875....
So is that the answer? Or what are they looking for?

Answer 3

@aznandmaths