Question

Simplify (5- 3i)^2. Will medal.

Answer 1

Expand it first using foil method. writing it like this (5-3i)(5-3i)

Answer 2

exactly @sweetburger nice job

Answer 3

so 16 - 30 i

Answer 4

anyone?

Answer 5

(5-3i)(5-3i) = 5*5 -5*3i -3i*5 -3i*(-3i) = ?

Answer 6

step by step not directly answers - for anybody can understanding it right sure easy

Answer 7

thats what i got, i even double checked with wolframalpha http://www.wolframalpha.com/input/?i=(5-3i)(5-3i)

Answer 8

(5-3i)(5-3i) = 5*5 -5*3i -3i*5 -3i*(-3i) = ?

=25 -15i -15i +9(i^2) =
=25 -30i + ?

Answer 9

do you can continue it please ?