Please help!!! Express the following in the form x + iy

(i) (8 + 6i) + (6 + 4i).
(ii) (9 - 3i) + (- 4 + 5i)
(iii) (2 + 7i) - (5 + 3i)
(iv) (5 - i) - (6 - 2i)
(v) 3(4 + 6i) + 9(1 - 2i)
(vi) 3i * (7 - 4i)
(vii) (9 + 2i)(1 + 3i)
(viii) (4 - i)(3 + 2i)
(ix) (7 + 3i) ^ 2
(x) (8 + 6i)(8 - 6i)
(xi) (1 + 2i)(3 - 4i) * (5 + 6i)
( xii) (3 + 2i) ^ 3

I don't know how to do this thing

use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation: