I'm studying for a subject matter exam in order to become a certified teacher in Texas. I need help with some of the sample questions. These are not the actual questions that will be on the test.
It's not necessary to be extremely detailed. A quick step-by-step, or how to do it on the calculator, or a summary of what I'm looking for, is usually fine.
Hope I'm posting this in the right place. I'm pretty sure polar coordinates makes this pre-calculus.
Please see the attachment!
I see. You're right, I guess it just looked like polar coordinates.
x^2 + (x+2)^2 = 1
2x^2 + 4x + 4 = 1
2x^2 + 4x + 3 = 0
Quadratic equation gives x = -1 ± (i√2)/2.
Which is the same as x = -1 ± [(√2)/2]i. One of which is C.