SOLUTION: multiply (4-6i)(4+6i) A)54 B)52 C)48 D)53

Algebra ->  Test  -> Lessons -> SOLUTION: multiply (4-6i)(4+6i) A)54 B)52 C)48 D)53      Log On


   

Question 1023832: multiply
(4-6i)(4+6i)
A)54 B)52 C)48 D)53
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
.
multiply
(4-6i)(4+6i)
A)54 B)52 C)48 D)53
~~~~~~~~~~~~~~~~~~~~~~~~~~~~` 

(4 - 6i)*(4 + 6i) = 4%5E2+-+6%5E2%2A%28i%5E2%29 = 4%5E2+-+6%5E2%2A%28-1%29 = 16 + 36 = 52.

Answer. Option B).