Factoriser (-3x+2)(2x+1)+(x+4)(-3x+2) pleeeease
Bonjour,
On met (-3x+2) en facteur :
[tex]\left(-3x+2\right)\left(2x+1\right)+\left(x+4\right)\left(-3x+2\right)\\ =\left(-3x+2\right)\left[\left(2x+1\right)+\left(x+4\right)\right]\\ =\left(-3x+2\right)\left[2x+1+x+4\right]\\ =\left(-3x+2\right)\left(3x+5\right)\\[/tex]
(-3x+2)(2x+1)+(x+4)(-3x+2)
(-3x+2)[(2x+1)+(x+4)]
(-3x+2)[2x+1+x+4]
(-3x+2)(3x+5)
voilà............ :)
