Answered

Bonsoir besoin d'aide svp

factoriser:

A=(4x+4) (x-5) +(x+1) (x-9)

B=x(5x-2) +x

C=(x-1) +4(x-1)(x+5)

merci d'avance ​

Sagot :

ZAGRE

Réponse:

A=4(x+1)(x-5)+(x+1)(x-9)

A=(x+1)[4(x-5)+(x-9)]

A=(x+1)[4x-20+x-9]

A=(x+1)(4x-29)

B=x [(5x-2)+1]

B=x [ 5x-2+1]

B=

[tex]x(5x - 1)[/tex]

C=(x-1) [ 1+4(x+5)]

C=(x-1) [ 1+4x+20]

C=(x-1)(4x+21)