Sagot :
Développer
A=(x +3)(2x-1)+5x (x +3)
= 2x^2 +6x -x -3+5x^2+15x
= 7x^2+20x-3
FACTORISER
A=(x +3)(2x-1)+(x +3)5x
= (x +3)(2x-1+5x)
= (x +3)(7x-1)
Développer
A=(x +3)(2x-1)+5x (x +3)
= 2x^2 +6x -x -3+5x^2+15x
= 7x^2+20x-3
FACTORISER
A=(x +3)(2x-1)+(x +3)5x
= (x +3)(2x-1+5x)
= (x +3)(7x-1)