Complex Numbers and Quadratic Equations Key Points

$-a + ib$

$a + ib$

$-a - ib$

$a - ib$ (correct)

0 + i1

1 + i1

1 + i0 (correct)

0 + i0

$z = r (cos\theta - i sin\theta)$

$z = r (cos\theta + i sin\theta)$ (correct)

$z = r (sin\theta + i cos\theta)$

$z = r (sin\theta - i cos\theta)$

<p>When their real parts are equal</p> Signup and view all the answers

<p>$-a - ib$</p> Signup and view all the answers