Solve quadratic equations with real coefficients that have complex solutions
HSN.CN.C.8 (+)
Extend polynomial identities to the complex numbers.
HSA.SSE.A.2(A2)
Use the structure of an expression to identify ways to rewrite it.
HSA.APR.B.3
Identify zeros of polynomials when suitable factorizations are available, and use the zeros to construct a rough graph of the function defined by the polynomial.
HSA.CED.A.4(A2)
Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations.