Express your answer in the form (a + bi) (21 + 2i) + (13 + 8i) =

34 +10i

Step-by-step explanation:

( 21 + 2i) + (13 + 8i) =

Add the real numbers

21+13 = 34

Add the imaginary numbers

2i+8i = 10i

The complex number is the real plus the imaginary number

34 +10i

The answer to your question is   (34 + 10i)

Step-by-step explanation:

Data

            (21 + 2i) + (13 + 8i) =

To solve this operation, just sum up the whole numbers and get a result then, sum up the imaginary numbers and get another result. Finally, write the result.

-Whole numbers            21 + 13 = 34

-Imaginary numbers       2i + 8i = 10i

Result                               (34 + 10i)

Step-by-step explanation:

1. D, because the opposite angles have to be angle to be a parallelogram

2. C, again opposite angles have to be equal. You have to plug in the different values of x and the only one that works is 21.

ex.

angle J = 3x + 20

angle J = 3(21) + 20

angle J = 83

angle L = 4x-1

angle L = 4(21)-1

angle L = 83

3. the answer is

yes: BK = DK and CK= AK

no: CK= DK and BK= AK

4. the angle would be the same since opposite so 25 degrees

5. C, because the angles are equal to 180... so draw a picture of a square right down the different angle names, they come out to equal or next to each other.

Hope this helped