Question

question
simplify the expression to a + bi form:
(3 - 5i) + (1 + 7i)

Explanation:

Step1: Group real and imaginary terms

$(3 + 1) + (-5i + 7i)$

Step2: Combine real parts

$3 + 1 = 4$

Step3: Combine imaginary parts

$-5i + 7i = 2i$

Step4: Write in $a+bi$ form

$4 + 2i$

Answer:

$4 + 2i$