I'm having some trouble figuring out what steps I need to take to answer some harder questions.
Simplify
a) (2-i)(1+2i)(1-i)
Answer:7-i
b) (sqrt of 2/2 + sqrt of 2 /2i)^2
=i
c)(6-4i)^2 - (1-3i)^2 + 5i
=28-37i
d) sqrt of -4 + sqrt of -25
= 7i, -3i, 3i, or -7i
next the instructions say...
For each pair of roots, find a quadratic equation. Express your equation in the form ax^2+ bx + c =0.
a) -1/2 + sqrt of 3/2i, -1/2 - sqrt of 3/2i
=19+80i
thanx for the help...