QuestenaPráctica que te muestra qué repasar después
Pregunta 90

An expression is written as -(5 * 5). Select all statements that are true about it.

  1. Its value is -25.Respuesta correcta
  2. The multiplication is completed first and the minus sign is then applied to the result.Respuesta correcta
  3. Only a minus sign written inside the brackets would take part in the multiplication.Respuesta correcta
  4. -(5 * 5) and (-5) * (-5) are two ways of writing the same value.

Explicación

Here the minus sign stands outside the brackets, so it waits until five has been multiplied by itself and then reverses that twenty-five, landing twenty-five below zero. A sign written inside the brackets would instead be one of the factors, which is why moving the minus sign inside the brackets changes the value.

Continúa con este test

Empezar la práctica
Pregunta 90: An expression is written as -(5 * 5). Select all statements… · Integers and Negative Numbers · Questena