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Express the following in the form a + ib:
5 + √2i/1 - √2i
5 + √2i/1 - √2i = 5 + √2i/1 - √2i × 1 + √2i/1 + √2i = 5 + 5√2i + √2i - 2/1 - (√2i)2
= 3 + 6√2i/1 + 2 = 3(1 + 2√2i)/3 = 1 + 2√2i