Let w and z be two complex numbers such that w = a + ib and z = A + iB.
w z = (a + ib)(A + iB) = a A + a B i + b A i + i^{2} b B
= a A - b B + i(a B + b A)

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Enter the real and imaginary parts (as an integer, a decimal or a fraction) of two complex numbers z and w and press "Multiply Complex".