Operations on complex numbers
Addition of complex numbers. Consider complex numbers a1 =a1 +b1i, a2 =a2 +b2i. Add them and combine the like terms
a1 +a2 =a1 +b1i +a2 +b2i= (a1 +a2) +i(b1+b2), We add separately the real and the imaginary parts. 2) Subtraction a1–a2 = (a1–a2) +i(b1–b2). Geometrically, addition and subtraction of complex numbers is performed exactly in the same way as addition and subtraction of the vectors with corresponding coordinates.
b2 a2 a1-a2 b1 a1 0 a1 a2 x
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y
a1+a2
