Express (4 - 5i)(5 + 5i) in the form a + bi, where a and b are integers and i^2 = -1.
(4-5i)(5+5i)=4(5)+4(5i)-5i(5)-5i(5i)=20+20i-25i-25i^2=20-5i-25(-1)=20-5i+25=45-5i is your answer.
+185 
