Bonjour j’aimerais qu’on m’explique pourquoi la valeur de x au carré + 3x - 5, pour x= - 2 est égale à -7
Merci.

By: USER6775
27 Agustus 2025 mathematiques 5 minutes
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Grade: Education Subject: mathematiques
Bonjour j’aimerais qu’on m’explique pourquoi la valeur de x au carré + 3x - 5, pour x= - 2 est égale à -7
Merci.
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cc

on remplace x par -2 et on calcule

soit

= (-2)² + 3 * (-2) - 5

=    4     -   6       - 5

=         -2            - 5

= -7

Answered on 27 Agustus 2025

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