A= (x+y+z)³ = x³+(y+z)³+3x(y+z)(x+y+z)
-B= (x+y-z)³= -x³-(y-z)³-3x(y-z)(x+y-z)
-C= (y+z-x)³= -(y+z)³+x³+3(y+z)x(y+z-x)
-D= (x-(y-z))³=-x³+(y-z)³+3x(y-z)(x-y+z)
los que estan en negrita se eliminan
3x(y+z)[x+y+z+y+z-x]+3x(y-z)[x-y+z-x-y+z]
3x(y+z)(2)(y+z)+3x(y-z)(2)(z-y)
6x(y+z)²-6x(y-z)²
6x[(y+z)²-(y-z)²]
6x(2y)(2z)
sol 24xyz
3x(y+z)(
