Question

Does anyone know this?. can u help me? lol

Answer 1

Explanation:

Answer 2

First question: answer is d. 4) -i

`{i}^(16) + {i}^(6) - 2 {i}^(5) + {i}^(13) \\ = ( {i}^(2) ) {}^(8) + ( {i}^(2) ) {}^(3) - 2( {i}^(2) )( {i}^(2))(i) + ( {i}^(5) ) {}^{ (13)/(5) } \\ = {( - 1)}^(8) + {( - 1)}^(3) - 2(1i) + ( - 1) {}^{ (13)/(2) } \\ = 1 - 1 - 2i + i \\ = - i`

Second question: answer is d. 4) 0

`= {i}^(99) - {i}^(3) \\ =( {i}^(3) )( {i}^(96) ) - {i}^(3) \\ = {i}^(3) ( ({i {}^(2) )}^(48) - 1) \\ = - i(1 - 1) \\ = 0`