t désigne un nombre et A=t^2+5(t-1)

a) Décrire l'expression A par une phrase employant les mots:carré,différence,produit,somme.

b)Calculer A a la main

.t=-2 et t=1/2

By: USER5931
28 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques

t désigne un nombre et A=t^2+5(t-1)

a) Décrire l'expression A par une phrase employant les mots:carré,différence,produit,somme.

b)Calculer A a la main

.t=-2 et t=1/2

Asked by:
193 Viewed 193 Answers

Answer (193)

Best Answer
(211)

A est la sonne du carré de t et du produit de 5 par la différence entre t et 1

t² + 5t - 5 = 0

t = -2 => 4 +5.-3 = 4 - 15 = -9

t = 1/2 => 1/4 +5.-1/2 = 1/4 - 5/2 = -9/4

 

Answered on 28 Agustus 2025
(67)
A pour t=-2 est égal à -11 et non -9 . Autrement le reste est bon .
Answered on 28 Agustus 2025

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