(-7t+8)(3-5t)Celle la me conprend pas non plus

On développe :

(-7t+8)(3-5t) = (-7t)*3 + (-7t)*(-5t) + 8*3 + 8*(-5t) = -21t + 35t² + 24 -40t = 35t² - 61t + 24

Bonjour,

(-7t+8)(3-5t) =

-21t+35t²+24-40t=

35t²-61t+24

J'espère que tu as compris

a+