Question 527593
Please, could you help with this? 
I need to simplify each expression
1. (2+3i)(4+5i) 
2. (1+2i)(6-2i)
3.( 3-6i) (6-2i) 
----------------
Multiply them.
1. (2+3i)(4+5i)
= 8 + 22i + 15i^2
i^2 = -1
= 8 + 22i - 15
= -7 + 22i
------------
2. (1+2i)(6-2i)
3.( 3-6i) (6-2i)