Sagot :
A= (x-2)(x-2) - 3(x-2)(x+5)
A = (x-2)(x-2 -3*x -3*5)
A = (x-2)(-2x - 17)
voila continues c toujours la meme chose
A = ( x -2)(x-2 -3(x+5)
= (x-2)(-2x -17)
= -(x-2)(2x+17)
B = (x-4 -5)(x-4 +5)
= (x-9)(x+1)
C = 3(x-1) + (x-1)(2x+5)
= (x-1)(3 + 2x +5)
= (x-1)(2x + 8)
= 2(x-1)(x+4)
D = ( 2x +7)(x-2) + (x-2)(x+2)
= (x-2)(2x+7+x+2)
= (x-2)(3x+9)
= 3(x-2)(x+3)
E =
F = (2x-3)(3(x+5) -1)
= (2x-3)(3x+4)
G = (2x-3)² - (2x-3)(7x+1)
= (2x-3)(2x - 3 -(7x+1))
= (2x-3)(-5x-4)