Bonsoir,
169x² + 130x + 25 = (13x)² + 2(13x)(5) + 5² = (13x+5)²
(2x+5)(20x-7)+(5+2x)(20x+13)
= (2x+5)[(20x-7)+(20x+13)]
= (2x+5)(40x+6)
= 2(2x+5)(20x+3)
Réponse:
169x²+130x+25 = (13x)² + 2(13)(5)+(5)² = (13x+5)²
(2x+5)(20x-7)+(5+2x)(20x+13) = (2x+5)[(20x-7)+(20x+13)]=(2x+5)(20x-7+20x+13) = (2x+5)(40x+6) = 2(2x+5)(20x+3)
N'oubliez pas d'évaluer ma note ou cliquez sur l'étoile
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Bonsoir,
169x² + 130x + 25 = (13x)² + 2(13x)(5) + 5² = (13x+5)²
(2x+5)(20x-7)+(5+2x)(20x+13)
= (2x+5)[(20x-7)+(20x+13)]
= (2x+5)(40x+6)
= 2(2x+5)(20x+3)
Réponse:
169x²+130x+25 = (13x)² + 2(13)(5)+(5)² = (13x+5)²
(2x+5)(20x-7)+(5+2x)(20x+13) = (2x+5)[(20x-7)+(20x+13)]=(2x+5)(20x-7+20x+13) = (2x+5)(40x+6) = 2(2x+5)(20x+3)
N'oubliez pas d'évaluer ma note ou cliquez sur l'étoile