Find each product Write the a 2 i 3 2i 1 3i 2 5i Find ea

Find each product. Write the a (2 + i) (3 - 2i) (1 + 3i) (2 - 5i) Find each Quotient. Write the ans

Solution

60. (6-4i)(6+4i)

(a+b)(a-b)=a²-b² and i² =-1

hence,  (6-4i)(6+4i) = 6²-(4i)²

   =36-16.i²   = 36-16 (-1) = 36+16 = 52