I NEED HELP!!!! 3(7+7i)+i(7+7i) Thanks!:)​

Question

I NEED HELP!!!!

`3(7+7i)+i(7+7i)`

Thanks!:)​

Answer 1

Solve the equation:-

`3(7 + 7i) + i(7 + 7i) \\take \: common \: (7 + 7i) \: out\\ (7 + 7i) (3 + i) \: is \: your \: answer`

Open the equation:-

`3(7 + 7i) + i(7 + 7i) \\ 21 + 21i + 7i + 7 {i}^(2) \\ 7 {i}^(2) + 28i + 21 \: \: answer`