Auteur Message
JoeClark

Hors ligne

Inscrit le: 21 Sep 2017
Messages: 119
Profession: Manager
Moyenne de points: 0

 Posté le: Jeu 16 Nov - 13:42 (2017)    Sujet du message: why are -2^4, (-2)^4 diff, but -2^3, (-2)^3 are same? Hey guys, Why is it that the answer to -2^4 and (-2)^4 is different, but the answer to -2^3 and (-2)^3 is the same?At first, I thought it had something to do with one side being raised to an even number and the other to an odd number. If that were the case, both sides should have the same answer. So, I went riffling through my notes and remembered that if the sign is outside parenthesis, it is not considered part of the base. So I tried it out: -2^4 = -1 x -2 x -2 x -2 x -2 = -16(-2)^4 = (-2)(-2)(-2)(-2) = 16But if I apply the same rule to the other side, it gives me two different answers:-2^3 = -1 x -2 x -2 x -2 = 8(-2)^3 = (-2)(-2)(-2) = -8 I am so confused! am I doing something wrong here?Is it right???Please help....I didn't find the right solution from the Internet.Referenceshttps://www.freemathhelp.com/forum/threads/109002-Question-about-exponents-why-are-2-4-(-2)-4-diff-but-2-3-(-2)-3-are-same
Jeu 16 Nov - 13:42 (2017)
Auteur Message
Publicité

Posté le: Jeu 16 Nov - 13:42 (2017)    Sujet du message: Publicité
 Publicité Supprimer les publicités ?
Jeu 16 Nov - 13:42 (2017)
 Page 1 sur 1 Toutes les heures sont au format GMT + 3 Heures

Montrer les messages depuis:

 Sauter vers: Sélectionner un forum----------------A Lire Avant Tout   Charte du Forum   Mode MathsKomoriMaths   Algèbre   Analyse   Arithmétique et Nombres   Géométrie   Enigmes   Hors Maths

Index | créer un forum | Forum gratuit d’entraide | Annuaire des forums gratuits | Signaler une violation | Conditions générales d'utilisation