Bonsoir,pouvez-vous m'aider, Factoriser: -3x²+42x+147 -2x²-x-1 -X²+5x+8.... Pergunta de ideia deNicolas1501

Nicolas1501 @Nicolas1501

May 2019 1 48 Report

Bonsoir,pouvez-vous m'aider,
Factoriser:
-3x²+42x+147
-2x²-x-1
-X²+5x+8

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Utopia01 Bonjour,

A= 3x²+42x +147.
A= 3(x²+14x+49).
A= 3(x+7)².

B= 2x²-x-1.
B= 2x²+x-2x-1.
B= x(2x+1)-(2x+1).
B= (x-1)(2x+1).

Désolé, pour le dernier je ne sais pas.

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