Efectuar las operaciones indicadas y simplificar la exprecion recuelta
* x(x+1)-3x(-x+3)+(x^2-x)
*(x+2)(x-3)-(x-2)(x+3)
* x(x+1)-3x(-x+3)+(x^2-x)
*(x+2)(x-3)-(x-2)(x+3)
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x²+x-3x²-9x+x²-x = -x²-9 = (x+3) · (x-3)
ENUNCIADO 2
x²-3x+2x-6-x²-3x+2x+6 = -2x