bonjour j mapele geovanny je suis en 3 eme pouvez, m aides svp question 8et pour lundi

bonsoir

exercice 8

factoriser

(2/3x+1)(x-5)-(3x+9)(2/3x+1)=

facteur commun (2/3x+1) donc

(2/3x+1)(x-5-3x-9)=

(2/3x+1)(-2x-14)

factoriser

(3t+3/4)(t-5)+(t-5)(-5t+5/6)

facteur commun

(t-5)

(t-5)(3t+3/4-5t+5/6)=

(t-5)(-2t+(3/4+5/6))=

(t-5)(-2t+9/12+10/12)=

(t-5)(-2t+19/12)