1/(1+ 3i)
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The four roots are:1 + 2i, 1 - 2i, 3i and -3i.
1/194
1/ (a+b)
1/a + b
If the question contains a typing error and should read, "The reciprocal of a number plus the reciprocal of twice the number equals one half ?" Then let 'n' be the number.1/n + 1/2n = 1/2 : Multiply by 2n2 + 1 = n : n = 3NOTE : 1/3 + 1/6 = 1/2The answer is 3.