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

Cumulative examcumulative exam active13time remaining02: 44: 18the graph represents the data cost for monthly internetservice for a cell phone. which function, c(x), represents the monthly cost in dollarsin terms of x, the number of gigabytes used in a month? cell phone internet service(15,5x + 10150,0sx522 < x < 664x115, osx< 25x + 20, 2< x< 650, 65815%,monthly cost (s)20x + 5| 50x,0 < x < 22 < x < 664x( 15x, osx< 2c(x) = 5x + 10, 2< x< 6150x, 65 x5+1234 5 6 7 8 9 10 11 12gigabytes used

3382-299=3383- ? fill in the blank?

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7