preencha o quadro trocando a varíavel 'x' pelos valores sugeridos

Resposta: Em colunas
2ⁿ=> 1, 2, 4, -2, -4
(2/3)ⁿ=>1, 0.66, 0.44, -0.66, -0.44
2^-n=>1, -2, -4, 2, 4
(2/3)^-n=>1, -0.66, -0.44, 0.66, 0.44