Q. (8−i)−(−82+2i)=Express your answer in the form (a+bi).
Distribute negative sign: First, we need to distribute the negative sign to both terms in the second complex number, −(−82+2i). This means we will change the sign of both terms inside the parentheses.
Subtract real parts: Now, we subtract the real parts and the imaginary parts separately. The real part of the first complex number is 8, and the real part of the second complex number is −82 (after distributing the negative sign). The imaginary part of the first complex number is −i, and the imaginary part of the second complex number is −2i (after distributing the negative sign).
Subtract imaginary parts: Perform the subtraction for the real parts: 8−(−82)=8+82=90.
Combine results: Perform the subtraction for the imaginary parts: −i−(−2i)=−i+2i=i.
Combine results: Perform the subtraction for the imaginary parts: −i−(−2i)=−i+2i=i. Combine the results of the real part and the imaginary part to express the answer in the form a+bi: 90+i.
More problems from Add, subtract, multiply, and divide complex numbers