Q. (12−9i)+(32−6i)=Express your answer in the form (a+bi).
Identify parts of complex numbers: Identify the real and imaginary parts of each complex number.The real part of the first complex number (12−9i) is 12, and the imaginary part is −9i.The real part of the second complex number (32−6i) is 32, and the imaginary part is −6i.
Add real parts: Add the real parts together.Add the real parts of the complex numbers: 12 (from the first complex number) and 32 (from the second complex number).Calculation: 12+32=44
Add imaginary parts: Add the imaginary parts together.Add the imaginary parts of the complex numbers: −9i (from the first complex number) and −6i (from the second complex number).Calculation: −9i+−6i=−15i
Combine sums to form complex number: Combine the sums of the real and imaginary parts to form a single complex number.Combine the sum of the real parts 44 with the sum of the imaginary parts −15i to form the complex number 44−15i.