FP1.1.4 - Complex solutions of quadratic equations

Complex solutions of quadratic equations with real coefficients.

Use fp1.1.4 - complex solutions of quadratic equations to connect the rule to the data and decision in the question.

This matters because fp1.1.4 - complex solutions of quadratic equations determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply fp1.1.4 - complex solutions of quadratic equations to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: use the formula and units given in the question, show the substitution and interpret the result; the calculation alone is not the conclusion.