November 2020 0 115 Report
Bonjour, pourriez vous m'aider svp ? Pour tout nombre réel x, on pose :
T(x) = (2x + 5)2 + 2x + 5
a) Justifier que T(x) = (2x + 5)(2x + 5) + (2x + 5) x 1.
b) En déduire que T(x) = 2(2x + 5)(x + 3).
Merci​
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