لماذا سالب بسالب موجب ؟

في هذا الفيديو سوف نشرح العمق وراء عمليات الضرب في الاعداد الصحيحة "الاشارات خصوصا" لماذا سالب بسالب موجب وسالب بموجب سالب وموجب بسالب سالب وموجب بموجب موجب.

سوف نطرح قي هذا الفيديو أمثلة وبراهين تثبت لنا هذه العبارات بداية بمثال عن: النقود والعمليات المالية ثم برهان باستخدام خصائص الاعداد الصحيحة ومثال منطقي بالكلام واخيرا باستخدام مستقيم الاعداد والمتجهات مشاهدة ممتعة.

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