Questenaتدريب يوضح لك ما ينبغي مراجعته لاحقًا
السؤال 90

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

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

الشرح

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.

تابع هذا الاختبار

بدء التدريب
السؤال 90: An expression is written as -(5 * 5). Select all statements… · Integers and Negative Numbers · Questena