Posted by James on Monday, June 15, 2009 at 10:03pm.
Simplify 2(3i^14) (5i^23)
3i
Simplify: (53i)^2
16+30i
Simplify (3+2i) / (45i)
(2/41)(23/41)i
is this right?

Pre Calculus  Reiny, Monday, June 15, 2009 at 10:50pm
the second one should be
(53i)^2
= 25  30i + 9i^2
= 16  30i
the other two are correct