Aider moi a factoriser sa svp :♥♥♥ 9x²+25+30x (x-3)(x+1)-(x²-9) (2x-1)(x+5)+(1-2x)(3-2x) 36-81x²
Mathématiques
chaton17
Question
Aider moi a factoriser sa svp :♥♥♥
9x²+25+30x
(x-3)(x+1)-(x²-9)
(2x-1)(x+5)+(1-2x)(3-2x)
36-81x²
9x²+25+30x
(x-3)(x+1)-(x²-9)
(2x-1)(x+5)+(1-2x)(3-2x)
36-81x²
1 Réponse
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1. Réponse anno32
Bonjour
9x²+25+30x
(3x + 5)²
(x-3)(x+1)-(x²-9)
(x-3)(x+1) - (x-3)(x-3)
(x-3)[(x+1) - (x-3)]
(x-3)(x+1-x+3)
(x-3)(4)
(2x-1)(x+5)+(1-2x)(3-2x)
(2x-1)(x+5) - (2x-1)(3-2x)
(2x-1)[(x+5) - (3-2x)]
(2x-1)(x+5-3+2x)
(2x-1)(3x+2)
36-81x²
(6x + 9)(6x-9)