Question

calculate the subtraction (8.5 - 1.8i) - (-1.3 + 2.7i). provide the answer in the form of a + bi (1 point)

Explanation:

Step1: Distribute the negative sign

$(8.5 - 1.8i)-(-1.3 + 2.7i)=8.5 - 1.8i + 1.3-2.7i$

Step2: Combine real - parts and imaginary parts

$(8.5 + 1.3)+(-1.8i-2.7i)$
$9.8+( - 4.5i)$

Answer:

$9.8 - 4.5i$