Complex numbers Miss. Jenkins

Complex numbers Miss. Jenkins

Standards MGSE9-12.N.CN.7 Solve quadratic equations with real coefficients that have complex solutions by (but not limited to) square roots, completing the square, and the quadratic formula. MGSE9-12.N.CN.8 Extend polynomial identities to include factoring with complex numbers. For example, rewrite x2 4 as (x 2i)(x – 2i).

I can I can extend polynomials identity. I can rewrite expressions using complex numbers

Imaginary Numbers

Class work

Finding the complex conjugate

Finding the complex conjugate

Finding the complex conjugate

Let's Try a Few

Multiply the complex number and it’s complex conjugate Step 1 Foil Replace i squared with negative 1 Solve and you show have your answer