Question

Determine o sinal do produto: a) ( – ) . ( – ) . ( – ) . ( – ) = b) ( – ) . ( – ) . ( – ) . ( + ) . ( + ) = c) ( – ) . ( – ) . ( – ) . ( – ) . ( – ) = d) ( – ) . ( + ) . ( + ) . ( + ) . ( – ) = e) ( – ) . ( + ) . ( – ) . ( + ) . ( – ) =​

Answer 1

Resposta:

a) mais; b) menos; c) menos; d) menos; e) menos.

Explicação passo-a-passo:

.