COMPLEX NUMBERS AND QUADRATIC EQUATIONS
5.3 Algebra of Complex Numbers In this Section, we shall develop the algebra of complex numbers. 5.3.1 Addition of two complex numbers Let z 1 = a + ib and z 2 = c + id be any two complex numbers. Then, the sum z 1 + z 2 is defined as follows: z 1 + z 2 = (a + c) + i (b + d), which is again a complex number.
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