Answered

factoriser :A=-4x² +3x
               B= (2x+3)(x-4)+(3x-5) (x-4)
               C = (x-5)²- (x-5) (2x+2)
               D = (5x-2) (3x-1) + ( 10 x-4 ) (x+1)
               E = (x-3) (2x+5) + ( 5(3-x)

Sagot :

B= 2x^2-8x-3x-12+3x^2-12x-5x^2-20