The factor by which the complex rational number be multiplied is; 2 -9i.
What value should be used to multiply to find the quotient?
The expression given in the task is a fraction made up of complex numbers.
Hence in a bid to evaluate the quotient of the expression; -1 - 4i/ 2 + 9i.
The numerator and denominator must be multiplied by the conjugate of the denominator which in this case is; 2 -9i.
This is to help reduce the denominator to a real number.
Read more on division of complex numbers;
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