Express the complex numbers in the form of a + ib:
(5i)(−35i)
(5i)(−35i)=−3i2=−3×−1 (∵ i2=−1)=3
(15+25i)−(4+52i)
Express the following expression in the form of a + ib
(3+√5i)(3−√5i)(3+√2i)−(√3−√2i)