Question

hey friends .. please send fast​

Answer 1

Answer:

$i {}^{3 + x} + i {}^{4 + x} + i {}^{5 + x} + i {}^{6 + x} = i {}^{x} (i {}^{3} + i {}^{4} + i {}^{5} + i {}^{6} ) \\ = i {}^{x} ( - i + 1 + i - 1) = 0$