(2x+3)(x-1)-(2-2x)(x+1)=0
Mathématiques
Nakisisa658
Question
(2x+3)(x-1)-(2-2x)(x+1)=0
1 Réponse
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1. Réponse aminerbt
(2x+3)(x-1)-(2-2x)(x+1)=0
(2x² + 3x - 2x - 3 ) - (2x + 2 - 2x² - 2x ) = 0
2x² + 3x - 2x - 3 - 2x - 2 + 2x² + 2x = 0
2x² + 2x² + 3x - 2x + 2x - 2x - 3 - 2 = 0
4x² + x - 5 = 0
4x² + x - 5 = 0
4(x + 5/4)(x − 1) =0
x + 5/4 = 0 ou x − 1 =0
x = - 5/4 ou x = 1