Simplify the expression to a + bi form:
(3+i) + (-12 - 9i)

-9-8i

Step-by-step explanation:

(3+i)+(-12-9i)

3+i-12-9i

3-12+i-9i

-9+i-9i

-9-8i

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for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

21

step-by-step explanation:

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