michaeldouglas963696 10/11/2013 2+3i x (4+5i) = 8+10i+12i+15(-1) = -7+22i 4-5i x (4+5i) = 16+20i-20i-25(-1) = 41
michaeldouglas963696
2+3i x (4+5i) = 8+10i+12i+15(-1) = -7+22i
4-5i x (4+5i) = 16+20i-20i-25(-1) = 41