Sagot :
Réponse :
C= (2x-5)[(1-8x)+(4x+9)
= (2x-5)(1-8x+4x+9)
=(2x-5)(10+4x)
D= (7-4x)(10x+3)-(10x+3)(8x-2)
=(10x+3) [(7-4x)-(8x-2)
=(10x+3)(7-4x-8x+2)
=(10x+3)(9-12x)
E= (3x-10)(x+4)-(3x-10)
=(3x-10)[(x+4)-1)]
=(3x-10)(x+3)
Réponse :
Bonjour,
[tex]C = (2x-5)(1-8x)+(2x-5)(4x+9)[/tex]
[tex]C=-2(-2x+5)^{2}[/tex]
[tex]C = -2(5-2x)^{2}[/tex]
[tex]C = -2(25-20x + 4x^{2}[/tex]
[tex]C = -50 + 40x - 8x^{2}[/tex]
[tex]D = (7-4x)(10x+3)-(10x+3)(8x-2)[/tex]
[tex]D=(10x+3)3(-4x+3)[/tex]
[tex]D =(30x+9)*(-4x + 3)[/tex]
[tex]D = -120x^{2} +54x + 27[/tex]
[tex]E = (3x-10)(x+4)-(3x-10)[/tex]
[tex]E=(3*-10)(x+3[/tex]
[tex]E=(-30)*(x+3)[/tex]
[tex]E = -30x*(x+3)[/tex]
[tex]E = 30(x + 3)[/tex]
Voila bonne journée..