FP1.1.5 - Finding conjugate complex roots

Finding conjugate complex roots Knowledge that if z is a root of f(z) = 0 then z * is 1 1 and a real root of a cubic equation also a root. with integer coefficients.

Use fp1.1.5 - finding conjugate complex roots to connect the rule to the data and decision in the question.

This matters because fp1.1.5 - finding conjugate complex roots determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply fp1.1.5 - finding conjugate complex roots to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: FP1.1.5 - Finding conjugate complex roots is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.